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Safety-critical technical reference — read before use. Independent educational guidance for qualified AGL and aerodrome personnel. It is not an approved procedure, design, specification or regulatory instruction and does not replace your aerodrome’s permit-to-work, isolation/LOTO procedures, the approved design or the manufacturer’s instructions. Series-circuit AGL equipment can carry lethal voltages. Read the full disclaimer ↓
THE AGL ENGINEERING CENTRE by Precision AGL Academy · FAA Advisory Circulars

FAA AC 150/5340 SERIES EXPLAINED

The FAA AC 150/5340 series is a key reference family for airport visual aids — markings, signs, the segmented circle, visual-aid installation and maintenance. For AGL engineers, the important point is that AC 150/5340 is not one single standard. It is a family of Advisory Circulars, each addressing a different part of the airport visual-aid system.

Understand → Select the Applicable AC → Design → Install → Test → Inspect → Maintain → Document → Verify
Start Reading AGL Standards Library
01 · Definition

What Is the FAA AC 150/5340 Series?

FAA Advisory Circulars in the 150/5340 family provide FAA guidance and standards related primarily to airport visual aids. Visual aids communicate information to pilots through lighting, markings, signs, visual guidance systems, location and installation arrangements, and maintenance practices. The series therefore connects directly with the operational visibility of an airport.

LightingMarkingsSignsVisual Guidance SystemsLocation & InstallationMaintenance Practices
02 · Why It Matters

Why Is AC 150/5340 Important for AGL?

Airfield Ground Lighting cannot be engineered only by selecting a light fixture. An AGL installation has to work as part of the complete visual guidance environment.

RUNWAY
TAXIWAY
MARKINGS
SIGNS
LIGHTING
INSTALLATION
MAINTENANCE
OPERATIONAL USE
The 150/5340 series provides important FAA references for several of these elements — but not all of them on its own.
03 · Common Mistake

AC 150/5340 Is a Series, Not One Document

One of the most common mistakes is saying "According to FAA AC 150/5340..." without identifying the actual AC. That statement is incomplete — the suffix matters because each AC has a different purpose.

Incomplete

"According to FAA AC 150/5340..."

Correct

"According to FAA AC 150/5340-30J..." or "According to FAA AC 150/5340-18H..."

04 · The Family

The Five Active ACs in the Series

The FAA's current listing identifies these five documents as active. The FAA maintains current, cancelled and draft AC listings on its official Advisory Circular pages — always verify revision status before use.

1M

Airport Markings

Runway, taxiway and apron markings

5D

Segmented Circle

Airport marker system

18H

Sign Systems

Runway and taxiway signs

26C

Maintenance

Maintenance and inspection

30J

Design & Installation

Visual-aid installation

ACSubjectPrimary Engineering UseStatus
150/5340-1MAirport MarkingsRunway, taxiway and apron markingsActive
150/5340-5DSegmented Circle Airport Marker SystemAirport marker systemActive
150/5340-18HStandards for Airport Sign SystemsRunway and taxiway signsActive — published Sep 30, 2024
150/5340-26CMaintenance of Airport Visual Aid FacilitiesMaintenance and inspectionActive
150/5340-30JDesign and Installation Details for Airport Visual AidsVisual-aid installationActive
05 · AC 150/5340-1M

Standards for Airport Markings

This AC contains FAA standards for markings used on runways, taxiways and aprons. Markings provide visual information to pilots and surface vehicle operators — they can identify runway location, centreline, threshold, designation, taxiway routing, holding positions and other operational information. Markings therefore work together with AGL; a common engineering mistake is to treat visual guidance as only a lighting problem.

Typical Runway Marking Considerations

DesignationCentrelineThresholdAiming PointTouchdown ZoneEdge-Related Visual InformationOperational Identification

Taxiway Markings Work With

Taxiway Centreline LightsTaxiway Edge LightsLocation SignsDirection SignsHolding-Position MarkingsRunway Protection Systems
The visual system is a combination — Marking + Sign + Light + Geometry + Operational Procedure — where the effectiveness of one element can depend on the others. The exact marking arrangement must be established from the applicable FAA requirements and airport configuration.
06 · AC 150/5340-5D

Segmented Circle Airport Marker System

AC 150/5340-5D provides standards for a segmented circle airport marker system consisting of pilot aids and traffic-control devices. This is a more specialized document within the 5340 family, and the FAA currently lists it as active.

Segmented Circle — Typical Elements

Wind direction indicator at the centre, with landing-strip indicators, traffic-pattern indicators and a landing direction indicator (tetrahedron or T) arranged around it

Traffic pattern indicator WIND DIRECTION INDICATOR Landing strip indicators LANDING DIRECTION INDICATOR Configuration, exact elements and dimensions per AC 150/5340-5D and the applicable airport arrangement
07 · AC 150/5340-18H

Standards for Airport Sign Systems

AC 150/5340-18H addresses the siting, design and installation of signs on airport runways and taxiways. An airport sign is not simply a box containing LEDs — its operational purpose depends on message, location, orientation, colour, visibility and installation. A technically functioning sign can still be operationally ineffective if it is incorrectly located or oriented.

Sign Function Types

DirectionLocationRunway DesignationTaxiway IdentificationMandatory InstructionsHolding-Position Information

Sign Siting Must Consider

Pilot Viewing DirectionTaxiway GeometryRunway IntersectionsClearanceVisibilitySign OrientationNearby StructuresMounting Arrangement
SIGN
POWER
CONTROL
ISOLATION
WIRING
MOUNTING
VISIBILITY
INSPECTION
This is where AC 150/5340 guidance connects with electrical and equipment standards.

Mandatory, location, direction and destination signs each have their own colours.

FOUR SIGNS · SAME AIRFIELD, DIFFERENT MESSAGES MANDATORY SIGN the stop sign 27-09 WHITE ON RED marks a limit not to cross at the holding position hold until ATC clears you LOCATION SIGN where you are A YELLOW ON BLACK names taxiway or runway at or just past intersection confirms position only DIRECTION SIGN which way next B BLACK ON YELLOW names the next taxiway before the intersection arrow follows the turn DESTINATION SIGN which way to an area CARGO BLACK ON YELLOW names a functional area same format as direction sign points toward the area
Figure 10. Four sign types in schematic: mandatory, location, direction and destination.
AGL Visual Encyclopedia: Different signs Direction signs Destination signs
08 · AC 150/5340-26C

Maintenance of Airport Visual Aid Facilities

AC 150/5340-26C provides guidance and specifications for maintenance of airport visual-aid facilities. This is particularly important because AGL performance changes over time — a system can pass commissioning and later deteriorate.

Causes of In-Service Deterioration

DirtWater IngressDamaged LensesCorrosionCable FaultsConnector DeteriorationLED/Lamp DegradationMisalignmentStructural DamageElectrical Faults

A Structured Maintenance Program Includes

Routine InspectionCleaningFunctional TestingElectrical InspectionMechanical InspectionAlignment VerificationPhotometric VerificationCorrective MaintenanceDocumentation

AGL Maintenance Cycle

Inspect → Identify → Rectify → Test → Verify → Record

This creates traceability, and installation compliance ≠ lifetime performance.

Maintenance Records Should Provide Traceability

Asset → Location → Date → Problem → Action → Test → Result → Technician → Closure

One preventive visit in stages, from looking with the circuit live to restoring after work.

ONE VISIT · ORDER OF WORK live look first, hands-on work only when isolated THE PLAN · FREQUENCY LAYERS quick checks often, deeper tests less often CIRCUIT LIVE look and report defects noted ISOLATED, PROVED DEAD clean, inspect tighten, replace test RESTORED re-energise verify lights record OUTAGE KEPT SHORT · TASKS GROUPED UNDER ONE ISOLATION FREQUENT walk-round, lights-out check PERIODIC cleaning, inspection, torque LONGER INTERVAL insulation, earth, CCR service TIME → INTERVALS SET BY THE SITE PROGRAMME, REGULATOR AND MAKER RECORDS AND TRENDS FEED THE NEXT PLAN SIX VISIT STEPS · IN ORDER 1 PLAN programme, permit, parts, tools; agree access and outage 2 LOOK circuit live: walk the lights, note what is wrong 3 ISOLATE circuit off, locked out, proved dead before hands-on 4 SERVICE clean, inspect, tighten, replace worn parts 5 TEST insulation, continuity and earthing before re-energising 6 RESTORE, LOG re-energise, verify lights, record and trend the results
Figure 11. Preventive maintenance sequence: a visit in three stages and six steps.
AGL Visual Encyclopedia: Preventive maintenance sequence Corrective maintenance sequence
Airmen repairing airfield approach lighting at an air base
Photo 3. Airmen repair airfield approach lighting. The team repaired several lamps and re-synchronised the flashing lights.Credit: U.S. Air Force photo by Senior Airman Kenny Holston (VIRIN 120626-F-CJ989-005). Public domain (U.S. Government work). Source page
09 · AC 150/5340-30J

Design and Installation Details for Airport Visual Aids

AC 150/5340-30J provides guidance and recommendations on installation of airport visual aids. For AGL engineers, this is one of the most important documents in the series — the difference between a good product and a good airport installation is often installation quality.

A Correctly Specified Fixture Can Still Perform Incorrectly Because Of

Incorrect LocationIncorrect OrientationIncorrect ElevationIncorrect AlignmentIncorrect MountingIncorrect Installation DetailPoor DrainagePoor Cable Routing
Requirement → Design → Drawing → Equipment → Installation → Testing

Installation should not be treated as an independent activity — it should originate from an approved design.

Inset Light Installation

Correct base, orientation, level, pavement interface, drainage, cable connection, mechanical protection, water-ingress prevention, torque, optical orientation.

Elevated Light Installation

Mounting, frangibility where applicable, height, alignment, orientation, mechanical stability, cable entry, structural condition.

PAPI Installation

Longitudinal/lateral position, elevation, azimuth, vertical aiming, unit-to-unit relationship, approach geometry — installation engineering plus optical verification.

Installation confirms the equipment is physically installed correctly. Commissioning confirms the complete system operates as intended. Acceptance testing confirms specified acceptance requirements are satisfied. These are different activities.

Base-can installation: the below-ground work that fixes the fixture position and height.

SET IN THE PAVEMENT · SECTION level, flush, grouted, with its cable entry ALONG THE LAYOUT · PLAN cans in line, same orientation, lids on PAVEMENT BASE CAN 1 2 3 CENTRELINE · SET TO THE SURVEY 4 5 1FLANGE FLUSH, LEVELat the height the design sets 2FULLY GROUTED OR BACKFILLEDno voids, so the can cannot shift 3CONDUIT ENTRY ALIGNEDwith the duct, sealed as designed 4ALIGNED TO THE LAYOUTposition and orientation set from a survey 5COVER ON UNTIL THE FIXTUREkeeps grit and water out of the can SET RIGHT FIXTURE BOLTS ON FIRST TIME Level, flush, aligned and fully filled SET WRONG TILTED, PROUD OR TURNED Misaligned or damaged light; costly to reset once grouted SCHEMATIC · NOT TO SCALE · FOLLOW THE DESIGN DRAWINGS
Figure 12. Base-can installation in section: flush with the finished surface, grouted and sealed.
AGL Visual Encyclopedia: Base-can installation Base-can positioning
Quick Reference

FAA Runway, Taxiway & Approach Lighting Standards

FAA lighting standards are spread across design ACs and equipment specifications. The design AC says where and how many; the equipment AC says what the fixture must be and how it must perform. Always confirm the current edition of each.

SystemFAA standards view
Runway lighting FAA / FAA runway lighting standardsLayout and installation follow AC 150/5340-30; fixtures follow AC 150/5345-46
FAA taxiway lighting standardsEdge and centerline lighting layout from AC 150/5340-30; FAA taxiway light fixtures from AC 150/5345-46
Approach lighting FAAApproach lighting layout and installation details from AC 150/5340-30
FAA PAPI standards / FAA PAPI system / PAPI FAA / FAA PAPIThe PAPI equipment specification is AC 150/5345-28; siting and installation follow AC 150/5340-30
FAA REILRunway end identifier lights, covered by the visual-aid design and equipment ACs
FAA stop bar lights and FAA runway guard lightsRunway incursion prevention lighting, covered by the design and equipment ACs
FAA runway and taxiway signs / FAA airport lighting signsSigns follow AC 150/5345-44 for equipment and AC 150/5340-18 for sign systems
FAA obstruction lightingObstruction marking and lighting follow AC 70/7460-1, with equipment under AC 150/5345-43

Go Deeper

The PAPI Engineering Guide covers FAA PAPI siting, aiming and photometry in detail.

PAPI Engineering Guide →

Runway lighting systems →

Taxiway lighting systems →

FAA Runway Lighting Standards

FAA runway lighting standards are split between two documents. Layout and installation follow AC 150/5340-30, and the fixtures follow AC 150/5345-46. FAA documents are not interchangeable with ICAO ones, so confirm the current edition of each and which framework the project specification names.

FAA Taxiway Lighting Standards

FAA taxiway lighting standards work the same way. The edge and centerline lighting layout comes from AC 150/5340-30, and the FAA taxiway light fixtures follow AC 150/5345-46. Check the current edition letters before specifying.

FAA PAPI Standards & FAA PAPI System

FAA PAPI standards sit in two documents. The equipment specification for the FAA PAPI system is AC 150/5345-28, and siting and installation follow AC 150/5340-30. Check the current edition letter of each before specifying. The PAPI Engineering Guide covers siting, aiming and photometry in detail.

FAA REIL

FAA REIL are runway end identifier lights: a pair of synchronised flashing lights, one on each side of the runway threshold, that identify the runway end. They are covered by the visual-aid design and equipment ACs, so confirm the current editions for the project.

FAA Runway and Taxiway Signs

FAA runway and taxiway signs follow AC 150/5345-44 for the equipment and AC 150/5340-18H for sign systems, which covers siting, design and installation. A sign has to match the actual runway and taxiway geometry.

FAA Obstruction Lighting

FAA obstruction lighting follows AC 70/7460-1 for the marking and lighting of obstructions, with equipment under AC 150/5345-43. Confirm the current editions and the requirement for the structure concerned.

Where each lighting system sits on a typical airfield: approach, runway and taxiway.

TERMINALTOWERAPPRWYTWYSTDCCR HOUSELV DISTRIBUTIONAPRON FLOODLIGHTSWINDSOCK (LIT)LOCALISERLANDING DIRECTIONRUNWAYPARALLEL TAXIWAYAPPROACHLIGHTSAPRON123456789SERIES CIRCUITS FROM THE CCR HOUSE (APPROACH, RUNWAY, TAXIWAY, STAND GUIDANCE)LOW-VOLTAGE SUPPLY TO APRON FLOODLIGHTS (NOT A SERIES CIRCUIT)TYPICAL LAYOUT · CONCEPTUAL PLAN VIEW · NOT TO SCALE
Figure 1. Conceptual plan view of a typical airport lighting layout. The FAA documents cover each of these systems.
AGL Visual Encyclopedia: Complete AGL airport layout ICAO lighting terms

Side view of an approach lighting system along the extended runway centreline.

APPROACH LIGHTING SYSTEM OVERVIEW RUNWAY GROUND LEVEL APPROACH PATH · AIRCRAFT FLIES TOWARD THE RUNWAY → SUBSTATION CONSTANT CURRENT REGULATOR CONTROL & MONITORING ATC COMMANDS · STATUS BACK 1 · LIGHTS ON FRANGIBLE STEMS SEQUENCED FLASHERS 3 · ISOLATING TRANSFORMER IN A CAN, ONE PER LIGHT 4 · SERIES CABLE LOOP FROM THE REGULATOR 2 · FOUNDATION BELOW EACH STEM GREEN THRESHOLD 5 · REGULATOR SETS THE BRIGHTNESS STEP SCHEMATIC · NOT TO SCALE · NUMBER, SPACING AND HEIGHT OF STEMS ILLUSTRATIVE
Figure 2. Approach lighting in side view: lights on frangible stems and foundations leading to the threshold. Flashing lights are shown lit.
AGL Visual Encyclopedia: Approach lighting system overview ALSF-1 ALSF-2
Airfield lighting technician lowering an elevated approach lighting spire to change a lamp
Photo 1. A technician uses a crank system to lower an elevated approach lighting spire so a lamp can be changed.Credit: U.S. Air Force photo by Samuel King Jr. (VIRIN 151029-F-oc707-005). Public domain (U.S. Government work). Source page
10 · Critical Distinction

AC 150/5340 and the AC 150/5345 Series

The 150/5340 series primarily addresses visual aids — their design, installation, maintenance and related systems. The 150/5345 series contains specifications for airport lighting equipment and related equipment. This distinction is extremely important.

5340 = System

What the visual aid system needs to accomplish, and how it is arranged, installed and maintained.

5345 = Equipment

Equipment specifications and characteristics. For example: AC 150/5345-46F (light fixtures), AC 150/5345-10H (CCRs and regulator monitors), AC 150/5345-7F (underground electrical cable), AC 150/5345-3G (L-821 control panels).

The FAA's AIP/PFC checklist also identifies these 5345 documents alongside the 5340 visual-aid documents. This is a simplified engineering interpretation, not a replacement for reading the applicable AC.
System vs. Equipment — How the Two Series Relate

AC 150/5340 governs the visual-aid system as a whole; AC 150/5345 specifies the individual pieces of equipment used within it

AC 150/5340 SERIES — THE SYSTEM Design, siting, installation, maintenance of the visual aid 150/5345-46F Light fixtures 150/5345-10H CCRs & regulator monitors 150/5345-7F Underground electrical cable 150/5345-3G L-821 control panels Each 5345 document specifies one type of equipment used inside the 5340 system
Quick Reference

FAA Airport Lighting Equipment Specifications (AC 150/5345)

What is FAA AC 150/5345-46? What is FAA AC 150/5345-28? Each FAA airport lighting equipment specification covers one product family, so the equipment ACs complete the picture beside the 5340 series.

Advisory CircularCovers
FAA AC 150/5345-46Runway and taxiway light fixtures (FAA runway light fixtures and FAA taxiway light fixtures)
FAA AC 150/5345-28PAPI systems
FAA AC 150/5345-7L-824 underground electrical cable (FAA L-824 cable)
FAA AC 150/5345-26L-823 plug and receptacle cable connectors (FAA L-823 connector)
FAA AC 150/5345-42Light bases, transformer housings, junction boxes and accessories
FAA AC 150/5345-10Constant current regulators (FAA constant current regulator)
FAA AC 150/5345-3L-821 panels for airport lighting control (FAA L-821 lighting control panel)
FAA AC 150/5345-53Airport lighting equipment certification program

Reading the FAA Airport Lighting Equipment List

FAA airport lighting equipment is specified by L-number and AC together. Check the edition letter on each AC before it goes into a specification.

Standards Companion →

What Is FAA AC 150/5345-46?

FAA AC 150/5345-46 is the FAA specification for runway and taxiway light fixtures, covering their construction, performance and photometric requirements. Check the current edition letter before specifying.

What Is FAA AC 150/5345-28?

FAA AC 150/5345-28 is the FAA equipment specification for PAPI systems. Check the current edition letter before specifying.

FAA Runway Light Fixtures & FAA Taxiway Light Fixtures

FAA runway light fixtures and FAA taxiway light fixtures are specified under AC 150/5345-46. Layout, spacing and installation come separately from AC 150/5340-30, so a fixture can meet its equipment specification and still be placed or installed incorrectly.

Identify which documents govern an item before choosing equipment or layout.

HOW THE APPLICABLE STANDARDS ARE FOUND 1 DEFINE THE ITEM Product, circuit, location, use and project stage OUTPUT: SCOPE STATEMENT 2 GATHER SOURCES Regulator rules, contract, spec, design basis and maker data OUTPUT: SOURCE DOCUMENTS 3 LIST STANDARDS Every standard named, and every one those standards refer to OUTPUT: CANDIDATE LIST 4 FIX THE EDITION Issue, amendments and any national differences OUTPUT: EDITION-CONTROLLED LIST 5 TEST APPLICABILITY Scope clause against the item; mandatory or advisory OUTPUT: APPLICABLE STANDARDS 6 RECORD & MAINTAIN Register kept with the matrix, updated when sources change OUTPUT: STANDARDS REGISTER FEEDBACK LOOP A newly found or referenced standard goes back to the list; repeat until no new standard appears, then record the result. IDENTIFY FIRST · THEN SELECT, DESIGN AND PROVE COMPLIANCE SIMPLIFIED SEQUENCE · CONFIRM CURRENT RULES WITH THE REGULATOR AND CLIENT
Figure 3. Identifying the standards that apply: define the item, gather sources, list the standards and resolve conflicts.
AGL Visual Encyclopedia: Applicable standard identification Requirement mapping

Elevated and inset fixture concepts as the FAA describes them.

FAA FIXTURE CONCEPTS · TWO WAYS TO MOUNT A LIGHT ELEVATED FIXTURE · BREAKAWAY MOUNT INSET FIXTURE · IN-PAVEMENT T 1 LIGHT UNIT 2 FRANGIBLE COUPLING 3 LIGHT BASE non-load-bearing 4 ISOLATION TRANSFORMER 5 PRIMARY CABLE PAVEMENT T 1 LIGHT UNIT flush with pavement 3 LIGHT BASE load-bearing 4 TRANSFORMER HOUSING 5 PRIMARY CABLE AC 150/5345-46 · FIXTURE SPEC AC 150/5345-42 · BASES & HOUSINGS AC 150/5345-53 · CERTIFICATION SCHEMATIC · SECTION VIEWS · NOT TO SCALE · CHECK THE CURRENT ADVISORY CIRCULARS
Figure 4. FAA fixture mounting concepts. Equipment specifications cover the fixture; layout and installation come from other documents.
AGL Visual Encyclopedia: FAA fixture concepts Elevated vs inset
11 · Worked Examples

Applying the Series to Real Components

Runway Edge Light

  • System — applicable visual-aid design & installation requirements
  • Equipment — applicable FAA light-fixture specification
  • Electrical — CCR, cable, connector, circuit requirements
  • Site — installation, alignment, condition
  • Verification — electrical & photometric performance

Taxiway Sign

  • AC 150/5340-18H addresses siting, design and installation requirements
  • Other FAA equipment specifications may apply to the sign equipment itself
  • The project specification may impose additional requirements

Runway Marking

  • AC 150/5340-1M is the relevant FAA visual-aid reference
  • Verify marking type, location, dimensions, layout, colour
  • Verify installation, condition and inspection

Example: Maintenance Problem

Suppose a taxiway light is repeatedly failing. Do not only replace the fixture — investigate the complete circuit.

Fixture → Connector → Secondary Cable → Isolating Transformer → Primary Circuit → CCR → Control → Environment
12 · Compliance Philosophy

FAA Visual-Aid Compliance Is System-Based

A visual aid should not be declared compliant simply because the equipment is FAA-certified or FAA-specified. An FAA equipment specification establishes requirements for a particular equipment type — but installing a compliant product incorrectly does not automatically produce a compliant installation.

Compliance Can Involve

EquipmentInstallationLocationAlignmentElectrical SupplyControlOperational PerformanceMaintenance
Approved/Suitable Equipment ≠ Automatically Correct Installation

Electrical Testing

Insulation resistance, continuity, circuit resistance, CCR output, transformer verification, cable testing, earthing/bonding, functional switching.

Photometric Testing

Intensity, colour, beam alignment, optical coverage, uniformity where applicable.

For Photometry Engineers, the Practical Question Is

"What visual performance requirement applies to this particular light or visual aid?" Then determine the required measurement method, measurement geometry, intensity requirement, colour requirement, beam alignment, coverage, uniformity where applicable and acceptance criteria — do not apply one generic photometric test criterion to every AGL fixture.

A light can pass one discipline and fail the other. A fixture may illuminate but have incorrect beam alignment, reduced intensity, incorrect colour or optical contamination — ON ≠ Correct. A sign can illuminate correctly but still be wrong on location, orientation, message, visibility or clearance — Electrical Function ≠ Operational Compliance.

A visual aid is compliant only as part of a working system.

WHOLE SYSTEM · POWER, CONTROL AND EARTH TOGETHER CONTROL & MONITORINGtower panel · server · network · local controllers POWERSUPPLYutility + standby SUBSTATION& CCRsregulators SERIESCIRCUITSprimary cable TRANSFORMERS& BASE CANSat each light FIXTURES& SIGNSon the airfield EARTHING NETWORK UNDER THE WHOLE RUN POWER IN · LIGHT OUT · CONTROL OVER ALL · EARTH UNDER ALL FOUR PARTS, ONE SYSTEM POWERutility with a standby supply CIRCUITSCCRs feed series circuits to the lights CONTROLcommands down, status back up PROTECTIONearthing under the whole run SCHEMATIC · REAL SYSTEMS DIFFER BY AIRPORT SIZE, CATEGORY AND DESIGN · NOT A DESIGN
Figure 5. A complete AGL system: control and monitoring, power chain, series circuits, transformers and fixtures.
AGL Visual Encyclopedia: Complete AGL system architecture Compliance matrix
13 · Engineering Chain

The FAA AGL Engineering Chain

01

Requirement

02

Applicable FAA AC

03

Approved Design

04

Equipment Specification

05

Installation

06

Electrical Testing

07

Functional Testing

08

Photometric/Visual Verification

09

Acceptance

10

Maintenance

11

Records

14 · Regulatory Context

FAA vs ICAO vs Indian Requirements

FAA ACs and ICAO Annex 14 are not interchangeable documents. ICAO provides international Standards and Recommended Practices; FAA ACs provide FAA-specific standards, guidance and recommendations. For Indian airport projects, FAA documents should not automatically be treated as the governing authority — the project may instead be governed by DGCA, AAI, ICAO, Indian Standards, or approved project specifications. FAA references apply where specifically required or adopted.

A Useful Engineering Hierarchy

1

Regulatory Requirement

What the authority requires.

2

Project Specification

What the project contract requires.

3

International Standard

For example, applicable ICAO provisions.

4

National Standard

For example, applicable Indian Standards.

5

FAA Standard

Applicable where FAA requirements are specified or adopted.

6

Manufacturer Requirement

Equipment-specific installation and operating requirements.

A common technical mistake is writing "This equipment is ICAO/FAA/IS compliant" — that statement is too broad. Instead identify: which requirement, which document, which revision, which equipment, which test, which installation, which evidence.

What Is the Difference Between ICAO and FAA Airport Lighting?

ICAO sets international Standards and Recommended Practices in Annex 14, which each State adopts. The FAA issues Advisory Circulars with detailed equipment specifications and installation details for US airports. The two cover similar ground but differ in structure and detail, so use the standard your project requires.

ICAO Annex 14 is the global baseline; each regulator works from it.

ONE BASELINE, THREE ROUTESICAO ANNEX 14 VOLUME IBASELINEStandards and Recommended PracticesStates notify differences under Article 38TRANSPOSEDGENERALCONFORMANCEFOLLOWS NUMBERINGEASAEUCS-ADR-DSN with GM paragraphs;Regulation (EU) 139/2014, Part-ADR.OPSFAAUSAdvisory Circulars, L-numbered fixtures;14 CFR Part 139 airport certificationDGCAINDIACAR Section 4 Series B Part I;AIP India and airport supplementsWHERE EACH RECORDS ITS DIFFERENCESCertification basis agreed withthe competent authorityFAA AIP, GEN 1.7Lists differences from Annex 14AIP India, GEN 1.7Filed on ICAO EFOD and publishedSAME LIGHTS IN SUBSTANCE. DIFFERENT LEGAL ROUTE, VOCABULARY, UNITS AND EDITION DATES.
Figure 6. ICAO, EASA, FAA and DGCA: one baseline, several regulators. Use the standard your project requires.
AGL Visual Encyclopedia: Regulator comparison DGCA CAR vs ICAO Filed differences

Same lights, different names: ICAO and FAA terms side by side.

ICAO ↔ FAA · SAME IDEA, SOMETIMES A DIFFERENT NAME ICAO · ANNEX 14 FAA · ADVISORY CIRCULARS MATCH Threshold Threshold SAME TERM Touchdown zone lights Touchdown zone lights (TDZL) SAME TERM Stop bar Stop bar lights SAME TERM Runway-holding position Runway holding position (“hold short”) SAME TERM Aerodrome Airport DIFFERENT NAME Aeronautical ground light Airport lighting · visual aids DIFFERENT NAME Runway threshold identification lights REIL (runway end identifier lights) DIFFERENT NAME Visual approach slope indicator VGSI (PAPI, VASI) DIFFERENT NAME Low / medium / high intensity LIRL · MIRL · HIRL DIFFERENT NAME Non-instrument runway Visual runway DIFFERENT NAME SCHEMATIC · WORDING PARAPHRASED · CHECK THE CURRENT ICAO ANNEX 14 AND FAA ADVISORY CIRCULARS
Figure 7. ICAO and FAA airfield lighting terms, with the ones that are the same in both.
AGL Visual Encyclopedia: FAA lighting terminology ICAO lighting terminology
15 · Quick Reference

AGL Engineer's Quick Reference

NeedApplicable AC
Runway/taxiway markingsAC 150/5340-1M
Segmented circle marker systemAC 150/5340-5D
Airport signsAC 150/5340-18H
Maintenance guidanceAC 150/5340-26C
Visual-aid installation detailsAC 150/5340-30J
Equipment specificationLook to the applicable 150/5345 AC

Compliance Matrix

RequirementApplicable ACDesign ReferenceEquipmentInstallationTestEvidence
Visual aid5340DrawingEquipmentSiteInspectionReport
Marking5340-1MLayoutMaterialSiteInspectionRecord
Sign5340-18HSign scheduleSignSiteFunctionalReport
Installation5340-30JDetail drawingFixtureSiteInspectionChecklist
Maintenance5340-26CMaintenance planSystemFieldInspectionLog
1M

Marking Type → Layout → Dimensions → Location → Colour → Installation → Inspection

5D

Marker System → Configuration → Location → Visibility → Installation → Maintenance

18H

Sign Type → Message → Siting → Orientation → Visibility → Construction → Installation → Maintenance

26C

Inspection → Cleaning → Adjustment → Repair → Testing → Records → Preventive Maintenance

30J

Design → Location → Mounting → Alignment → Installation → Protection → Inspection

16 · Working With the Document

How to Read an FAA AC

Do not read an AC like a normal textbook. Read it in order, then extract the requirements applicable to your project.

Purpose → Applicability → Definitions → Requirements → Installation → Testing/Inspection → Maintenance → Figures/Tables → References
ItemRequirementSourceDesign ResponseVerification
FixtureApplicable requirementACDrawingTest
SignApplicable requirementACSign scheduleInspection
MarkingApplicable requirementACMarking planInspection
InstallationApplicable requirementACDetailSite check
MaintenanceApplicable requirementACMaintenance planRecord
Before using an AC: check the FAA website → confirm active status → confirm revision → confirm changes → confirm applicability.

Field Inspection Connects the Drawing to Physical Reality

Drawing Says → Field Confirms
LocationOrientationFixture TypeQuantitySpacingMountingCable RouteSign LocationMarking LayoutOperational Function
17 · Documentation Package

Building a Defensible Compliance File

A professional FAA-related AGL project file connects the requirement to physical, tested reality.

Project File Should Include

Approved DrawingsApplicable AC ListEquipment DatasheetsCertificationsFactory Test ReportsInstallation RecordsCable Test ReportsTransformer Test ReportsCCR Test ReportsFunctional Test ReportsPhotometric ReportsInspection RecordsNCR RecordsRectification RecordsFinal Acceptance Documentation

FAA AC + Approved Drawing

The drawing is where the requirement becomes physical.

FAA Requirement → Design Detail → Equipment → Installation → Test

If the chain breaks, compliance evidence becomes weak.

Do not confuse equipment certification with system acceptance. A product can satisfy its equipment specification, but the installed system can still fail because of incorrect location, orientation, installation, wrong electrical configuration, poor maintenance, incorrect control or poor photometric performance. Equipment Compliance + Installation Compliance + System Verification = Stronger Compliance Evidence.
18 · Inspection & Commissioning

Installation Inspection, Commissioning & Acceptance Testing

A practical installation inspection covers four dimensions, then commissioning verifies the complete system before acceptance.

Visual

  • Damage
  • Alignment
  • Cleanliness
  • Mounting
  • Identification

Mechanical

  • Fasteners
  • Base
  • Frangibility where applicable
  • Structural condition

Electrical

  • Connections
  • Cable
  • Transformer
  • Earthing/bonding

Optical

  • Beam direction
  • Light output
  • Colour
  • Visibility

Commissioning Sequence

Pre-Check → Energize → Functional Test → Control Test → Electrical Test → Visual Test → Photometric Test → Rectification → Retest → Acceptance
Acceptance testing should be based on the approved specification, drawings, ITP, test procedures, applicable FAA AC, equipment standards and authority requirements.
Quick Reference

FAA Airport Lighting Photometry, Testing, Maintenance & Certification

FAA airport lighting photometry, testing, maintenance and certification are linked: certification proves a design meets its specification, and the later steps prove each installed light still performs.

FAA Airport Lighting Certification

What is FAA airport lighting certification? It is the FAA airport lighting equipment certification program under AC 150/5345-53, in which certified equipment is listed so that owners can specify it. Equipment for federally funded projects is generally expected to be certified. Check the current FAA list and program rules.

FAA Runway Lighting Photometry & FAA Taxiway Lighting Photometry

FAA runway lighting photometry and FAA taxiway lighting photometry check intensity, colour and beam distribution against the equipment AC. Fixture design is verified in the laboratory, and installed lights can be checked in the field.

AGL photometry →

FAA Airport Lighting Testing

FAA airport lighting testing covers electrical checks, functional tests and, where required, photometric verification, recorded in the commissioning file.

AGL testing & inspection →

FAA Airport Lighting Maintenance & FAA Airport Visual Aid Maintenance

FAA airport lighting maintenance and FAA airport visual aid maintenance follow FAA AC 150/5340-26, which sets out inspection, cleaning and repair expectations for visual aid facilities.

AGL Maintenance Handbook →

Reading the beam: angle on the axes, intensity inside the contours.

THE DIAGRAM · ANGLE GRID curves of equal candela around the beam axis READING IT · BANDS AND SPACING between two curves, close or wide apart 50 % OF PEAK 10 % OF PEAK LEFT RIGHT UP HORIZONTAL AND VERTICAL ANGLE FROM THE BEAM AXIS P 1 2 3 4 PEAK 50 % 10 % P LIES BETWEEN 10 % AND 50 % OF PEAK read from the two curves around it 6 CLOSE steep fall WIDE gentle fall 5 1ANGLE GRIDhorizontal across, vertical up, beam axis at centre 2CURVE OF EQUAL CANDELAevery direction on it has the same intensity 3PEAK ON THE AXIShighest intensity, centre of the rings 4READ A DIRECTIONfind its angles, see the two curves around it 5CURVE SPACINGclose curves mean a quick change in intensity 6COMPARE WITH THE STANDARDmeasured against the required diagram CORRECT READINGBY ANGLE, THEN BETWEEN TWO CURVESDirection in, intensity band out WRONG READINGTHE PEAK VALUE ONLYSame peak, very different beams SCHEMATIC · ILLUSTRATIVE LEVELS · NOT A STANDARD DIAGRAM · SEE ICAO ANNEX 14 VOL. I, APP. 2
Figure 8. An isocandela diagram: the angle grid and the contours of equal intensity used in photometric checks.
AGL Visual Encyclopedia: Isocandela diagram Cartesian photometric diagram

Four checks feed one acceptance decision.

THE 4Cs · ACCEPTANCE DECISIONCOLOURChromaticityCANDELAIntensityCOVERAGEBeam spread and aimCONFIGURATIONPlacement and layoutALL FOURMEET?YESNOACCEPTREJECTINVESTIGATERETEST123451COLOURChromaticity within its region2CANDELAIntensity meets the requirement3COVERAGEBeam spread and aim are correct4CONFIGURATIONPlacement, spacing, layout5DECISIONEvery C must pass to acceptSCHEMATIC · THE ACTUAL CRITERIA COME FROM THE STANDARD AND THE PROCEDURE
Figure 9. Photometric acceptance: colour, candela, coverage and configuration each feed the decision.
AGL Visual Encyclopedia: Photometric acceptance Beam measurement
Airfield lighting electrician inspecting strobe lights on an airfield
Photo 2. An electrician inspects strobe lights on the airfield. The team inspects all the lights on the runway and the taxiways.Credit: U.S. Air Force photo by Senior Airman Rusty Frank (VIRIN 140123-F-YU668-280). Public domain (U.S. Government work). Source page
19 · Non-Conformance & Troubleshooting

Non-Conformance & the FAA Troubleshooting Framework

When a visual aid fails, follow a structured non-conformance process rather than jumping straight to a fix.

Identify → Record → Determine (Electrical / Mechanical / Optical / Operational) → Investigate Root Cause → Rectify → Retest → Record Result → Close NCR

Troubleshooting Path

Symptom → Affected Visual Aid → Equipment → Electrical Circuit → Installation → Optical/Visual Condition → Control System → Root Cause → Corrective Action → Verification

Example: Multiple Taxiway Lights Fail

Check CCR → Circuit → Primary Cable → Transformers → Secondary Connections → Fixtures. If multiple lights fail together, investigate the common upstream element before replacing individual fixtures.

Example: A Single Inset Fixture Is Dark

Check fixture, secondary connector, secondary cable, isolating transformer, primary circuit, CCR, physical damage and water ingress — in that order, to avoid unnecessary replacement.

20 · System Reliability

ALCMS, Emergency Power, Lightning Protection & Water Ingress

ALCMS

Distinguish command, feedback, status, alarm and actual field condition. A control screen showing ON does not necessarily prove the field light is producing the required optical output.

Emergency Power

Primary power, secondary/emergency power, transfer, CCR behaviour, control system behaviour, restart, monitoring and failure indication.

Lightning Protection

Earthing, bonding, surge protection, cable protection, equipment protection and lightning-related failures — AGL equipment sits in an exposed environment.

Water is a major field reliability concern. Inspection should consider inset fixtures, bases, junctions, connectors, cables, transformer housings, drainage and sealing — a water-related failure can appear as an electrical fault but originate from installation or environmental conditions.
21 · Human Factors & Safety

Human Factors, Runway Incursion Prevention & Installation Quality

Correct Information → Correct Visibility → Correct Interpretation → Safe Movement

Visual aids exist to communicate information to pilots and surface operators — the final objective is not merely technical compliance. Lighting, signs and markings operate together as a runway safety system:

Runway MarkingsTaxiway MarkingsTaxiway SignsRunway SignsRunway Guard LightsStop BarsTaxiway Centreline LightingControl SystemsProcedures

A High-Quality Installation Is

Correctly PositionedCorrectly AlignedMechanically SecureElectrically SoundOptically CorrectProperly IdentifiedAccessible for MaintenanceProperly Documented

A Good Inspection Asks Three Questions

Is it installed? — physical condition. Is it working? — electrical/functional condition. Is it performing correctly? — operational/visual/photometric condition. All three matter.

Corrective Action

Detect → Isolate → Diagnose → Rectify → Test → Verify → Document
Do not close a failure simply because the lamp illuminates again. Airport modifications — a runway extension, taxiway modification, new holding position, new sign or lighting, PAPI relocation, apron expansion, new obstacle, or AGL circuit modification — should each trigger an applicability review.
22 · Final Acceptance Checklist

Practical FAA AGL Checklist

Before final acceptance, work through five categories.

Documents

  • Correct FAA AC identified
  • Current revision verified
  • Project specification reviewed
  • Approved drawings available

Equipment & Installation

  • Specification & datasheet reviewed
  • Certification/test evidence available
  • Correct location, orientation & mounting
  • Correct cable connection & identification

Electrical

  • CCR & series circuit tested
  • Isolating transformers checked
  • Cables & connectors tested/checked
  • Earthing/bonding checked

Visual & Documentation

  • Correct illumination, colour & alignment
  • Photometric verification where required
  • Test reports & inspection records
  • NCR closure & final acceptance documentation

Five steps run in turn from the test records to the final decision.

FINAL ACCEPTANCE · IS IT READY TO HAND OVER REVIEWED · WITNESSED · CLOSED · SIGNED 1 RECORDS All test results in Within the limits Nothing missing RECORD: review 2 WITNESS Key tests shown Owner watches Matches records RECORD: witnessed 3 PUNCH LIST Open items listed Each one closed Re-tested, ticked RECORD: closure 4 HANDOVER As-built drawings O&M manuals Spares & training RECORD: documents 5 SIGN-OFF Certificate drawn up Owner signs Warranty starts RECORD: certificate SYSTEM ACCEPTED OWNER SATISFIED · CERTIFICATE SIGNED 6 NOT ACCEPTED CORRECT · RE-TEST · RE-SUBMIT ACCEPTED READY FOR SERVICE SCHEMATIC · STEPS SHORTENED · NOT TO SCALE
Figure 13. Final acceptance: review of test records, witnessing of key tests, closure of open items and sign-off.
AGL Visual Encyclopedia: Final acceptance Pre-commissioning
23 · Common Mistakes

Ten Common Mistakes With AC 150/5340

01

Vague Citation

Using "AC 150/5340" without identifying the specific document.

02

Outdated Revision

Using an outdated revision instead of the currently active one.

03

Wrong Category

Treating 5340 as an equipment certification series.

04

Ignoring 5345

Ignoring the corresponding 5345 equipment specifications.

05

False Equivalence

Assuming FAA equipment approval means installation compliance.

06

Electrical-Only Testing

Testing only electrical operation.

07

Ignoring Photometry

Ignoring visual/photometric performance.

08

Ignoring Geometry

Ignoring installation geometry.

09

Unconfirmed Applicability

Using FAA requirements without confirming project applicability.

10

Unsupported Claim

Claiming "FAA compliant" without evidence.

24 · Compliance Model

The FAA AC Compliance Model

Level 1 · Requirement

What does the applicable FAA document require?

Level 2 · Design

How is the requirement implemented?

Level 3 · Equipment

Does the selected equipment satisfy the required specification?

Level 4 · Installation

Was it installed correctly?

Level 5 · Verification

Was the result objectively tested?

Level 6 · Evidence

Can the compliance claim be demonstrated through records?

The Golden Rule

Never say "This AGL system is FAA compliant" without defining the applicable document, revision, requirement, equipment, installation, test, acceptance criteria and evidence.

"The applicable FAA requirements identified in the project specification were reviewed against the approved design, installed equipment and documented test results."

25 · Quick Map

FAA AC 150/5340 Quick Map

DocumentCovers
150/5340-1MAirport Markings
150/5340-5DSegmented Circle Airport Marker System
150/5340-18HAirport Sign Systems
150/5340-26CMaintenance of Airport Visual Aid Facilities
150/5340-30JDesign and Installation Details for Airport Visual Aids
150/5345 SeriesEquipment Specifications
Final Engineering Principle

A Series, Not a Standard

FAA AC 150/5340 should never be treated as a single "FAA AGL standard." It is a family of documents addressing different aspects of airport visual aids.

The better engineering question is not "Is this AGL equipment FAA compliant?" — it is "Which FAA requirement applies to this visual aid, how has it been implemented, and what objective evidence proves that the installed system satisfies the applicable requirement?"

Identify → Select → Check Revision → Design → Specify → Install → Test → Measure → Verify → Document → Maintain → Reassess
Go Deeper

Explore More of the AGL Knowledge Hub

Runway Lighting Systems

Runway edge, centreline and threshold lighting engineering.

Read the guide →

Taxiway Lighting Systems

Taxiway edge, centreline lighting and guidance signs.

Read the guide →

Approach Lighting Systems

ALS configurations and approach visual guidance.

Read the guide →

AGL Design & Engineering

Turning FAA requirements into an approved design.

Open the guide →

Installation & Commissioning

From site installation to final system acceptance.

Open the guide →

Testing & Inspection

Electrical, functional and visual verification.

Open the guide →

AGL Photometry

Intensity, colour, alignment and optical verification.

Learn photometry →

All About AGL

The complete airfield ground lighting overview.

Start here →

EASA CS-ADR-DSN AGL Compliance

See how the European design specification compares with FAA AC 150/5340.

Open EASA CS-ADR-DSN →

Working on an FAA-referenced airport project?

Available for design review, installation compliance and documentation support against the AC 150/5340 and 150/5345 series.

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AGL Engineering Hub

Explore the AGL Engineering Knowledge Hub

Fundamentals

All About AGL How Airfield Lighting Works Physics of AGL AGL Components Airfield Lighting Colour Codes LED Airfield Ground Lighting LED Benefits, Lifespan & Energy Savings Solar AGL (SAGL) Portable AGL (PAGL) Advantages & Disadvantages by System Type Sustainability in AGL

Standards & Compliance

ICAO Annex 14 AGL Requirements ICAO Aerodrome Lighting Requirements FAA AC 150/5340 Series EASA CS-ADR-DSN Compliance NOTAMs

Runway, Taxiway & Approach Lighting

Runway Lighting Systems Taxiway Lighting Systems Airport Approach Lighting Systems Approach Lighting Systems Apron Lighting & Stand Guidance Apron Floodlighting Design & Lux Levels VDGS: Visual Docking Guidance Obstruction Lighting & Marking Airfield Signage & Guidance Signs Markings & Signage Integration

Surface Movement & Safety

Follow the Greens Runway Guard Lights & Stop Bars Runway Incursion Prevention & SMGCS A-SMGCS ALCMS

PAPI

How Does PAPI Work? PAPI Engineering Guide ICAO PAPI Requirements PAPI Installation & Aiming PAPI Calibration & Alignment PAPI Alignment & Maintenance PAPI Maintenance Checklist

Electrical Engineering & Power

AGL Design & Electrical Engineering Diagrams, Schematics & Wiring CCR Working Principle CCR Deep Dive AGL Isolating Transformers Airport Isolating Transformer Junction Box & Transformer Housing Cables & Connector Engineering Electrical Architecture & Redundancy Emergency Backup Power Emergency Power & Lighting Systems Surge Protection & Lightning Mitigation Lightning & Surge Protection for Circuits

Photometry & Testing

AGL Photometry Photometric Testing Guide Photometric Testing Procedure Runway Lighting Photometry Taxiway Lighting Photometry AGL Testing & Inspection Installation & Commissioning Testing & Commissioning Guide

Maintenance, Inspection & Safety

Preventive & Corrective Maintenance Maintenance Schedule & Checklist Inspection, Maintenance & Audit Checklists How to Inspect & Replace Airfield Lights Common Failure Causes & Fixes Outage Response & Runway Closure Maintenance Work Safety: LOTO, Permits, PPE

Resources, Documentation & Careers

Datasheets, Catalogues & PDF Guides Project Documentation: ITP, As-Built, O&M Engineer & Technician Job Description / Salary
FAQ

Frequently Asked Questions

Q1What is the FAA AC 150/5340 series?

It is a family of FAA Advisory Circulars providing guidance and standards primarily for airport visual aids: lighting, markings, signs, visual guidance systems, location and installation arrangements, and maintenance practices. It is not one single standard; each AC addresses a different part of the airport visual-aid system.

Q2Is AC 150/5340 one document?

No. A common mistake is citing AC 150/5340 without identifying the actual AC. The suffix matters because each AC has a different purpose, so the correct form is to cite the specific document, such as AC 150/5340-30J or AC 150/5340-18H.

Q3Which ACs in the 150/5340 series does the FAA list as active?

The page lists five: 150/5340-1M (Airport Markings), 5D (Segmented Circle Airport Marker System), 18H (Standards for Airport Sign Systems, published Sep 30, 2024), 26C (Maintenance of Airport Visual Aid Facilities) and 30J (Design and Installation Details for Airport Visual Aids). Always verify revision status on the FAA's Advisory Circular pages before use.

Q4What does AC 150/5340-18H cover?

It addresses the siting, design and installation of signs on airport runways and taxiways. An airport sign is not simply a box containing LEDs, and a technically functioning sign can still be operationally ineffective if it is incorrectly located or oriented. Siting must consider pilot viewing direction, taxiway geometry, runway intersections, clearance, visibility, orientation, nearby structures and mounting.

Q5What does AC 150/5340-26C cover?

It provides guidance and specifications for maintenance of airport visual-aid facilities. It matters because AGL performance changes over time: a system can pass commissioning and later deteriorate from dirt, water ingress, damaged lenses, corrosion, cable faults, connector deterioration, LED or lamp degradation, misalignment and other causes.

Q6What does AC 150/5340-30J cover?

It provides guidance and recommendations on installation of airport visual aids, and the page calls it one of the most important documents in the series for AGL engineers. A correctly specified fixture can still perform incorrectly because of incorrect location, orientation, elevation, alignment, mounting, installation detail, drainage or cable routing.

Q7What is the difference between AC 150/5340 and AC 150/5345?

The 150/5340 series primarily addresses visual aids: their design, installation, maintenance and related systems, meaning what the visual aid system needs to accomplish and how it is arranged, installed and maintained. The 150/5345 series contains specifications for airport lighting equipment and related equipment.

Q8What is the segmented circle covered by AC 150/5340-5D?

AC 150/5340-5D provides standards for a segmented circle airport marker system consisting of pilot aids and traffic-control devices. Typical elements include a wind direction indicator at the centre with landing-strip indicators, traffic-pattern indicators and a landing direction indicator such as a tetrahedron or T arranged around it.

Q9Why is AC 150/5340 important for AGL engineering?

AGL cannot be engineered only by selecting a light fixture. An installation has to work within the complete visual guidance environment of runway, taxiway, markings, signs, lighting, installation, maintenance and operational use. The 150/5340 series provides important FAA references for several of these elements, but not all of them on its own.

Q10Are installation, commissioning and acceptance testing the same thing?

No. Installation confirms the equipment is physically installed correctly, commissioning confirms the complete system operates as intended, and acceptance testing confirms that specified acceptance requirements are satisfied. Installation should originate from an approved design and not be treated as an independent activity.

Q11What is FAA AC 150/5345-46?

It is the FAA specification for runway and taxiway light fixtures, covering their construction, performance and photometric requirements.

Q12What is FAA AC 150/5345-28?

It is the FAA equipment specification for PAPI systems; check the current edition letter before specifying.

Q13What is FAA AC 150/5340-30?

It is the FAA guidance for design and installation details of airport visual aids, including runway, taxiway and approach lighting.

Q14

What is FAA airport lighting certification?

It is the FAA program under AC 150/5345-53 that lists certified airport lighting equipment, which owners and designers can specify.

Q15What is the difference between ICAO and FAA airport lighting?

ICAO sets international Standards and Recommended Practices in Annex 14, which each State adopts. The FAA issues Advisory Circulars with detailed equipment specifications and installation details for US airports. The two cover similar ground but differ in structure and detail, so use the standard your project requires.

Field Insight

Engineering & Expert Notes

RS
By Rahul Sharma
Airfield Ground Lighting Specialist
It Is a Series, Not a Single Document
Structure

Identify which advisory circular covers the topic in question and check its current revision before citing it.

Read It Alongside the Equipment Specifications
Relationship

Installation and maintenance guidance work together with equipment specifications. Use them as a set.

Check Revision Letters
Currency

Superseded revisions remain in circulation. Confirm the current version at the source.

Know Where It Applies
Applicability

Understand when requirements are mandatory for a given funding or certification context and when they are guidance.

Do Not Mix Frameworks Without a Basis
ICAO and FAA

If a project draws on both ICAO and FAA, document which governs each element and why.

Keep Evidence of Compliance
Records

Maintain inspection and test records that show how each requirement was met.

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