AGL Inspection, Maintenance & Audit Checklists
Printable checklist templates for AGL design review, installation and commissioning, runway and taxiway lighting, CCRs, series circuits, transformers, cables, maintenance logs, audits and handover, to be adapted to your approved procedures.
AGL Inspection, Maintenance and Audit Checklists
An Airfield Ground Lighting (AGL) inspection checklist helps airport maintenance teams, project engineers, commissioning personnel and quality auditors conduct systematic inspections and maintain consistent records.
AGL inspections may cover design documentation, runway and taxiway lighting, approach lighting systems, Constant Current Regulators (CCRs), series circuits, isolating transformers, cables, connectors, lighting control systems and project handover documentation.
Using a structured checklist helps teams record observations, identify defects, track corrective actions and verify that inspection activities have been completed.
Checklists on this page
Airport Lighting Design Review Checklist
Design review helps identify omissions, coordination issues and documentation gaps before procurement, installation or modification work begins.
AGL Design Verification Checklist
| No. | Inspection item | Verification record |
|---|---|---|
| 1 | Project scope | Confirm that the documented scope matches the project requirements |
| 2 | Applicable standards | Verify the standards, specifications and revisions applicable to the project |
| 3 | Operational requirements | Review the intended runway, taxiway, approach or other lighting application |
| 4 | Approved drawings | Check drawing numbers, revisions, approval status and consistency |
| 5 | Equipment schedules | Verify fixture types, quantities, ratings and application |
| 6 | Circuit schedule | Confirm circuit identification, allocation and associated equipment |
| 7 | CCR selection | Verify ratings, configuration and compatibility with the specified circuits |
| 8 | Primary cables | Check cable types and specifications against approved design documents |
| 9 | Connectors | Confirm specified connector types and compatibility with associated equipment |
| 10 | Isolating transformers | Verify ratings, compatibility and intended installation locations |
| 11 | Fixture selection | Check equipment type, optical application and installation requirements |
| 12 | Control and monitoring | Review approved control functions, feedback signals and interfaces |
| 13 | Protection requirements | Review specified electrical protection, earthing and bonding arrangements where applicable |
| 14 | Installation access | Consider access for inspection, testing, replacement and future maintenance |
| 15 | Interface coordination | Check coordination with civil, electrical, control and other relevant systems |
| 16 | Design approvals | Confirm that required technical reviews and approvals are documented |
Design review record
Trace each design requirement from its source to the proof that it was met.
AGL Visual Encyclopedia: Requirement mapping Standard-selection flowchart Runway lighting pattern
AGL Installation and Commissioning Checklist
The installation and commissioning checklist should follow the approved ITP, project specification and manufacturer instructions. Record the applicable inspection stage, results, deficiencies and required approvals.
Installation and Commissioning Verification
| No. | Inspection area | Example verification |
|---|---|---|
| 1 | Materials | Confirm equipment model, ratings, identification and approval status |
| 2 | Installation records | Verify that required inspections and records are available |
| 3 | Cables | Check routing, identification, installation condition and relevant records |
| 4 | Cable joints | Review jointing records and specified inspection or test results |
| 5 | Connectors | Verify connector type, compatibility, physical condition and correct assembly |
| 6 | Isolating transformers | Check ratings, identification, connections and installation records |
| 7 | Light fixtures | Verify correct type, location, orientation and physical condition |
| 8 | Mounting arrangements | Check the installation against approved drawings and equipment instructions |
| 9 | CCR equipment | Verify rating, configuration, protection and specified functional checks |
| 10 | Series circuits | Review circuit identification, continuity or other specified test results, as applicable |
| 11 | Control interfaces | Confirm required interfaces and functions against approved documentation |
| 12 | ALCMS | Verify approved control functions, status indications and alarm responses |
| 13 | Instruments | Confirm instrument identification, calibration status where required, and suitability for the test |
| 14 | Test records | Check that required results and witnessing records are complete |
| 15 | Defect closure | Confirm that recorded defects have been resolved or formally retained as outstanding |
| 16 | Handover documents | Verify drawings, manuals, equipment registers and acceptance documents |
Installation Inspection Record
| Item | Status | Remarks / record reference |
|---|---|---|
| Materials verified | ☐ Pass ☐ Fail ☐ N/A | |
| Installation verified | ☐ Pass ☐ Fail ☐ N/A | |
| Tests completed | ☐ Pass ☐ Fail ☐ N/A | |
| Required documents available | ☐ Pass ☐ Fail ☐ N/A | |
| Defects recorded | ☐ Yes ☐ No ☐ N/A | |
| Required witness / approval completed | ☐ Yes ☐ No ☐ N/A |
Overall result: ☐ Accepted ☐ Accepted with documented outstanding items ☐ Not accepted
Static checks come first; power goes on only after the hold point is cleared.
AGL Visual Encyclopedia: Pre-commissioning Testing requirement flow Insulation-resistance testing
Runway and Taxiway Lighting Inspection Checklist
Visual inspection helps identify fixture damage, contamination, installation issues and operational defects that may affect an airfield lighting system.
The applicable checklist may cover runway edge lights, runway centreline lights, threshold lights, runway-end lights, taxiway edge lights, taxiway centreline lights, approach lights and other installed visual aids.
Visual Inspection Checklist
| No. | Inspection item | What to verify |
|---|---|---|
| 1 | Asset identification | Confirm the fixture location, type and asset or circuit ID |
| 2 | Physical condition | Look for visible damage, deterioration or missing components |
| 3 | Lens and optical surfaces | Check cleanliness, cracks and visible contamination |
| 4 | Water ingress indicators | Look for signs of moisture or water entry where observable |
| 5 | Mounting security | Check the installation against applicable maintenance instructions |
| 6 | Alignment and orientation | Verify against approved drawings, markings and specified inspection methods |
| 7 | Light output | Record apparent abnormalities and carry out prescribed checks where required |
| 8 | Colour and optical condition | Check against applicable equipment requirements and approved procedures |
| 9 | Missing or damaged fixtures | Record exact locations and asset identification |
| 10 | Circuit association | Verify the equipment-to-circuit identification against available records |
| 11 | Surrounding conditions | Record relevant obstruction, contamination or installation concerns |
| 12 | Defect reporting | Classify and report findings under the airport's approved system |
Example Inspection Record
| Asset / location | Observation | Defect category | Action / work order |
|---|---|---|---|
A daylight inspection may reveal physical damage and contamination, while an approved night inspection may help reveal abnormalities in lighting performance, alignment or uniformity. The inspection method must be appropriate to the asset and task.
Look at the whole pattern first, then walk the airfield and look closely at each fitting.
AGL Visual Encyclopedia: Visual inspection sequence Fixture inspection Lamp-out behaviour Adjacent-lamp-out rule
CCR and Series Circuit Inspection Checklist
Constant Current Regulators and associated series circuits are important elements of an AGL electrical system. Inspections should be carried out only by authorized personnel following the applicable electrical safety procedures and manufacturer documentation.
Constant Current Regulator (CCR) Checklist
| No. | Inspection item | What to verify |
|---|---|---|
| 1 | Equipment identification | Record CCR make, model, rating and asset number |
| 2 | External condition | Check for visible damage or abnormal conditions |
| 3 | Cooling arrangements | Inspect ventilation or cooling systems as applicable to the equipment |
| 4 | Operating indications | Review the specified meters, indicators and display values |
| 5 | Alarms | Record active, historical or recurring alarms as relevant to the inspection |
| 6 | Current settings | Verify settings against approved records without making unauthorized changes |
| 7 | Protective functions | Review the specified inspection or functional test records |
| 8 | Control interface | Verify required local and remote functions under the approved procedure |
| 9 | Maintenance history | Review past failures, repairs, alarms and recurring observations |
| 10 | Enclosure condition | Check relevant visible condition, access and cleanliness in accordance with the manual |
| 11 | Circuit identification | Confirm that labels and records correspond to the intended circuit |
| 12 | Outstanding defects | Record faults, restrictions and follow-up actions |
Series Circuit Checklist
A series circuit has one current, so one fault can affect every lamp on the loop.
AGL Visual Encyclopedia: Series circuit fault path Lamp-out behaviour
Same CCR, same circuit, different condition.
AGL Visual Encyclopedia: CCR inspection Constant current regulation
Isolating Transformer and Cable Inspection Checklist
Isolating transformers and associated primary and secondary cables should be inspected against their approved specifications, equipment instructions and installation records.
Isolating Transformer Checklist
| No. | Inspection item | What to verify |
|---|---|---|
| 1 | Asset identification | Record transformer ID, location and associated circuit |
| 2 | Rated characteristics | Verify identification against the specified rating and equipment schedule |
| 3 | Physical condition | Record visible damage, deterioration or other abnormalities |
| 4 | Connector condition | Check the accessible connector and cable interface condition |
| 5 | Installation location | Verify against approved drawings and equipment requirements |
| 6 | Cable connections | Review the installation or test records required for the task |
| 7 | Associated fixture | Confirm the equipment relationship against the circuit schedule |
| 8 | Test records | Review the required test results and acceptance status |
| 9 | Replacement records | Confirm that replacement equipment is correctly identified and documented |
| 10 | Defects | Record abnormalities and required corrective action |
Cable and Connector Checklist
Same transformer, same pit, different condition.
AGL Visual Encyclopedia: Transformer inspection Transformer troubleshooting
Follow the cable route from marker to marker, then record what was found.
AGL Visual Encyclopedia: Cable inspection Connector inspection
AGL Maintenance Log Template
A maintenance log creates a traceable record of inspections, defects, test results, corrective actions and verification.
Recommended Maintenance Log Fields
| Field | Information to record |
|---|---|
| Record number | Unique maintenance or inspection reference |
| Date and time | Inspection start time and relevant completion time |
| Location | Airport, runway, taxiway, equipment room or other location |
| Asset identification | Fixture, CCR, circuit, transformer, cable or system ID |
| Inspection type | Routine inspection, defect investigation, preventive maintenance or other approved category |
| Personnel | Name or identification of the responsible inspector and technician |
| Observation | Factual description of the condition found |
| Defect classification | Category assigned under the airport's approved procedure |
| Test performed | Test name and procedure reference, where applicable |
| Test result | Actual measured result and unit, where applicable |
| Acceptance criterion | Applicable reference and revision |
| Corrective action | Repair, replacement, adjustment or other approved action |
| Work order | Work order or corrective-action reference |
| Outstanding item | Details of unresolved defects or follow-up requirements |
| Verification | Person responsible for checking completed work |
| Closure | Closure date and authorized approval, as applicable |
Blank Printable Maintenance Log
| Date / time | Location / asset ID | Observation or defect | Test result / reference | Corrective action | Status / closure |
|---|---|---|---|---|---|
Where quantitative measurements are recorded, include the units, instrument identification where required, relevant procedure reference and applicable acceptance limits.
Keep records in the airport’s approved maintenance or document management system, following applicable access, retention and revision-control requirements.
Requirements become a plan, the plan becomes work, and the work ends in a record.
AGL Visual Encyclopedia: Maintenance requirement flow Preventive maintenance sequence Post-maintenance restoration
AGL Defect Classification and Corrective Action
Defect categories should be consistent with the airport’s approved maintenance and operational procedures. A general checklist should not establish its own operational risk classifications.
A defect record should include
Example defect record
| Field | Example entry |
|---|---|
| Asset ID | As recorded in the airport asset register |
| Location | As recorded on the approved layout |
| Observation | Fixture not operating during the inspection |
| Category | Assigned under the airport's approved procedure |
| Initial action | Reported to the responsible airport maintenance authority |
| Work reference | Recorded work order number |
| Corrective action | Documented by authorized maintenance personnel |
| Verification | Recorded test or functional-check result |
| Closure | Completed by the authorized reviewer |
Ask the questions in the same order for every finding. Safety is always asked first.
AGL Visual Encyclopedia: Inspection decision flow Serviceability-triggered maintenance
Related Guides
Troubleshooting AtlasAGL Compliance and Quality Audit Checklist
A quality or compliance audit reviews whether the required processes, equipment records and evidence meet the specified requirements. The auditor should identify the applicable requirement and retain objective evidence for each finding.
Audit Verification Checklist
| No. | Audit area | Verification |
|---|---|---|
| 1 | Applicable requirements | Identify the specification, procedure, standard or contract requirement |
| 2 | Document control | Confirm that applicable documents and revisions are controlled |
| 3 | Design documentation | Check approved drawings, circuit schedules and equipment selections |
| 4 | Material traceability | Review approved material records and equipment identification |
| 5 | Installation inspection | Check completed installation inspection records |
| 6 | Test evidence | Verify test reports, instruments and required approval records |
| 7 | Maintenance records | Review inspection logs, work orders and maintenance history |
| 8 | Calibration records | Verify instrument calibration evidence where required |
| 9 | Defect management | Check that reported defects have documented actions and status |
| 10 | Corrective actions | Review evidence that identified nonconformities were addressed |
| 11 | As-built documents | Compare required as-built records with the approved document process |
| 12 | Training and authorization | Verify applicable personnel competency and authorization records |
| 13 | Handover evidence | Check the required handover pack and acceptance documents |
| 14 | Previous audit findings | Verify the status and closure evidence of previous findings |
Audit Finding Record
| Field | Details |
|---|---|
| Audit reference | |
| Requirement or document reference | |
| Objective evidence reviewed | |
| Finding / observation | |
| Finding category | Assigned under the applicable audit procedure |
| Responsible person | |
| Corrective-action due date | |
| Evidence submitted | |
| Verification result | |
| Closure approval and date |
The strongest source governs; every item is checked in the same order.
AGL Visual Encyclopedia: Compliance decision tree Requirement mapping
Related Guides
AGL project documentation guideAGL Handover Checklist
Before handover, review the documentation required by the contract, approved ITP, project specifications and airport acceptance procedure.
Handover Documentation
Handover Status Record
Acceptance status: ☐ Complete ☐ Incomplete ☐ Conditional, where permitted by the governing procedure
What the owner should receive, and how the records tie together.
AGL Visual Encyclopedia: As-built records and circuit schedules Pre-commissioning
How to Prepare an Effective AGL Checklist
A useful AGL checklist should be specific to the asset, inspection activity and acceptance requirements.
Step 1: Identify the inspection objective.
Define whether the checklist is for design review, installation, commissioning, routine maintenance, fault investigation, audit or handover.
Step 2: Identify the asset and location.
Include the equipment ID, circuit reference and physical location needed to trace the inspection.
Step 3: Reference the governing documents.
Identify the applicable approved drawings, project specification, ITP, maintenance manual, test procedure and relevant standard revision.
Step 4: Define the inspection method.
Specify what the inspector must observe, measure, review or functionally verify. Use only authorized methods.
Step 5: Establish acceptance criteria.
Record the applicable limits or requirements from the governing document. Avoid vague entries such as "check OK" where specific evidence is required.
Step 6: Provide clear result fields.
Use suitable entries such as Pass, Fail and Not Applicable, supplemented by a remarks field. For quantitative tests, include the result, units and criteria reference.
Step 7: Assign corrective-action responsibility.
Give every finding a traceable reference, responsible person, due date where applicable and closure status.
Step 8: Control checklist revisions.
Maintain a document number, revision, issue date and approval record when required by the organization's document control process.
Step 9: Review after use.
Update the checklist through an approved change process when equipment, procedures or governing requirements change.
Six parts turn a list of tasks into a record someone else can rely on.
Recommended Checklist Document Format
For a printable checklist or controlled inspection form, include these document-control fields:
| Document field | Purpose |
|---|---|
| Checklist title | Identifies the inspection activity |
| Document number | Supports traceability |
| Revision number | Identifies the current approved version |
| Effective date | Shows when the revision applies |
| Project / airport | Establishes the scope |
| Equipment / circuit ID | Identifies the item inspected |
| Governing document reference | Links the inspection to approved requirements |
| Inspector details | Records responsibility |
| Result and remarks fields | Captures observations and evidence |
| Corrective-action reference | Links findings to follow-up records |
| Reviewer / approval | Records the required verification |
| Page number | Maintains document integrity |
Explore the AGL Engineering Knowledge Hub
Fundamentals
Standards & Compliance
Runway, Taxiway & Approach Lighting
Surface Movement & Safety
PAPI
Electrical Engineering & Power
Photometry & Testing
Maintenance, Inspection & Safety
Resources, Documentation & Careers
Frequently Asked Questions
Q1What is an AGL inspection checklist?
An AGL inspection checklist is a structured record used to verify relevant equipment condition, installation quality, electrical-system records, test evidence or maintenance activities against specified requirements.
Q2How do I prepare an AGL maintenance checklist?
Identify the asset, inspection frequency and objective. Refer to the applicable equipment instructions and approved procedure, define the checks and acceptance criteria, and provide fields for observations, test results, corrective actions and verification.
Q3What is an AGL compliance checklist?
An AGL compliance checklist records whether applicable design, material, installation, testing, maintenance or documentation requirements have been met, supported by references and objective evidence.
Q4Can these checklists be used at every airport?
They can serve as a starting point, but each checklist must be adapted to the airport's equipment, operating environment, approved access procedures, applicable requirements and maintenance system.
Q5Should an AGL checklist include measured test values?
Where measurements are required, record actual results with units, the test method or procedure reference, instrument details where required and the applicable acceptance criteria. Do not substitute generic values for approved limits.
Q6Does a completed checklist prove that an AGL system is ready for operation?
No. A checklist is a record of an inspection activity. Operational release or acceptance must follow the airport's authorized procedures, applicable acceptance requirements and required approvals.
Q7What should an airport lighting design checklist include?
An airport lighting design checklist should cover the applicable standards, lighting layouts, circuit arrangement and loading, equipment selection, cable routing, power supply, control and monitoring, redundancy and documentation. It is a design review aid and does not replace the designer's responsibility.
Q8What is an airfield lighting commissioning checklist?
An airfield lighting commissioning checklist records the checks made before and during energisation: equipment installed correctly, insulation and continuity tests, CCR operation, brightness steps, control functions and alarms. Signed results support handover and acceptance.
Q9What does an airport lighting maintenance checklist cover?
An airport lighting maintenance checklist covers routine visual inspection, cleaning, lamp or LED status, connectors and sealing, CCR and circuit readings, defect recording and follow-up actions. It sets the frequency of each task and who signs it off.
Q10What is an airfield lighting compliance checklist and an airfield lighting audit checklist?
An airfield lighting compliance checklist compares the installation and records with the applicable standards and the airport specification. An airfield lighting audit checklist supports a structured review of procedures, records, maintenance and quality systems. Both are used by quality, safety and technical teams.
Q11What belongs on an AGL maintenance safety checklist?
An AGL maintenance safety checklist covers permits, isolation and lockout, test for dead, PPE, movement-area access, communication and emergency arrangements before work starts. Use it together with the airport's own safe-working procedures.
Q12What is an airfield lighting maintenance log template?
An airfield lighting maintenance log template is a standard record of what was inspected or repaired, where, when, by whom, with test readings and follow-up. A consistent log shows trends and supports audits and reliability reviews.
Q13How to prepare an AGL maintenance checklist?
To prepare an AGL maintenance checklist, list the equipment and circuits, take tasks and intervals from the manufacturer's manuals and airport procedures, and add pass criteria and space for readings. Then trial it in the field, review it with the maintenance team and keep it under revision control.
Q14What is an airfield ground lighting inspection checklist and an airfield lighting inspection checklist?
An airfield lighting inspection checklist, also called an airfield ground lighting inspection checklist, lists the checks for each lighting system: condition of fixtures, lenses, alignment, sealing, outages and circuit readings. Each item has a pass or fail result and a defect note.
Q15What do a runway lighting inspection checklist and an approach lighting inspection checklist include?
A runway lighting inspection checklist covers runway edge, threshold, end and centreline lights for outages, damage, dirt, alignment and brightness. An approach lighting inspection checklist covers approach lights, supports and frangibility, aiming and outages. Both record defects for correction.
Q16What do a runway edge lights inspection checklist, runway centreline lights inspection checklist and threshold lights inspection checklist include?
These checklists cover physical condition, lens cleanliness, sealing, colour, alignment, mounting and whether each light operates at all brightness steps. A runway edge lights inspection checklist, runway centreline lights inspection checklist and threshold lights inspection checklist are normally completed along the runway with outages recorded by position.
Q17What is an AGL series circuit inspection checklist and a constant current regulator inspection checklist?
An AGL series circuit inspection checklist records current and voltage readings, insulation resistance, earth-fault indication and visual checks of the circuit. A constant current regulator inspection checklist records the CCR's output current at each step, alarms, cooling, connections and control mode.
Q18What is an airfield lighting isolation transformer inspection checklist and an airfield lighting cable inspection checklist?
An airfield lighting isolation transformer inspection checklist covers housing condition, sealing, connectors, secondary lead and insulation tests. An airfield lighting cable inspection checklist covers visible cable condition, joints, markers, routes and the results of continuity and insulation tests.
Q19What is an airfield lighting control system inspection checklist and an ALCMS inspection checklist?
An airfield lighting control system inspection checklist covers the operator interface, controllers, communications, alarms and backup control. An ALCMS inspection checklist adds checks of status indications, event logs, time synchronisation and interfaces with CCRs. Results are recorded with any alarms found.
Related AGL Resources
Continue learning through these related technical pages.
AGL Project Documentation Guide
ITPs, as-built drawings, quality records and handover documentation.
Open guideFinal Note
Consistent AGL inspections depend on clear requirements, suitable inspection methods, competent and authorized personnel, traceable records and timely corrective action. Use these templates as a foundation, then adapt and control them through the applicable airport and project procedures.
Engineering & Expert Notes
A Checklist Supports Judgement, It Does Not Replace It
UseInspectors should record observations that are not on the form. Allow space for notes and make sure unusual findings are escalated.
Tailor Generic Forms to the Installation
CustomisationAlign item names, tolerances and frequencies with your airfield's equipment and approved procedures before using a template in the field.
Control Revisions of the Checklist Itself
Document ControlDifferent versions in circulation cause inconsistent inspections. Keep one controlled version and withdraw old copies.
Define Defect Categories Before the Inspection
ClassificationAgree in advance which findings need immediate action, which can be scheduled and which are advisory. This keeps responses consistent.
Photograph Defects With a Location Reference
EvidenceA photo with a clear location makes later repair and verification easier. Add the item identifier to the record.
Close the Loop on Every Finding
Follow-UpTrack each defect to completion and re-inspection. Unclosed findings erode trust in the whole inspection process.
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Please read before relying on any content on this page or on any record downloaded from it.
- Purpose and intended users. This page is an independent educational and informational reference for competent, suitably trained and authorised airfield ground lighting (AGL) and aerodrome personnel. It is not professional engineering, legal or regulatory advice, and using it creates no professional or client relationship. Learning-path and Academy references describe stages of learning only and are not a certification, accreditation or authorisation.
- Safety. Work on series circuits, constant current regulators (CCRs), isolating transformers, cables, connectors and lighting fixtures can be fatal. Always apply the aerodrome’s permit-to-work and isolation/LOTO procedures, prove dead, use correctly rated instruments and PPE, and follow the manufacturer’s instructions. Nothing here authorises work on live equipment or the bypassing of any safety device or interlock.
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