How do you identify the applicable standards for an AGL item?
Define the item, gather the sources, follow every reference, fix the editions, test each standard against its scope, and record the list.
Applicable-standard identification finds every standard that already applies to an item. It starts from a clear scope, gathers the sources that name standards, and follows referenced standards until no new ones appear. Each is then fixed to an edition and tested against its own scope clause.
ICAO Standards and Recommended Practices reach a project through the State’s regulation (in India, the DGCA CARs), and any filed differences change what applies. The national rule, not the ICAO text alone, is the starting point.
A standard missed at this stage is usually found late, at inspection or after an incident. Keep the result as a standards register with the source, status and edition of each, and update it when a regulation, contract or edition changes.
- Define the item. Product, circuit, location, use and stage.
- Gather the sources. Regulator, contract, specification, design basis and maker data.
- List the standards. Named ones, then those they refer to.
- Fix the edition. Issue, amendments and national differences.
- Test and record. Scope against item, then the register.
Every standard has a source, an edition and a stated status, so the list is complete, checkable and easy to keep current.
Standards come from habit, referenced ones are missed and editions are unknown, so gaps appear only when something is checked.
Frequently Asked Questions
Q1What is the difference between choosing a standard and identifying the applicable ones?
Choosing picks one standard for a purpose when there is a choice to make. Identifying finds every standard that already applies to the item, whether through the regulator, the contract or the standards that those documents refer to. Identification comes first, and the list it produces is what you select from or comply with.
Q2Where do I look to find the applicable standards?
Start with the regulator’s rules, then the contract and the project specification, then the manufacturer’s data for the product. Each of these may name standards directly. Check the design basis and any approvals too, since they can add requirements.
Q3What are referenced standards?
A standard often cites other standards for test methods, materials or safety. Where the citation is a requirement, the cited standard applies too. Follow these references until no new standard appears, and note the edition each one cites.
Q4How do I know a standard applies to my item?
Read its scope clause and compare it with the item: the type of product, the circuit, the location and the use. A standard that does not cover the item, or covers a different voltage or use, does not apply. If the scope is unclear, ask the authority or the client.
Q5What should the final record contain?
For each standard, record its number, title, edition, where it came from, whether it is mandatory or advisory, and the part of the item it covers. Keep this list with the compliance matrix and update it when a regulation, contract or edition changes.
Q6Do ICAO standards apply directly to my project?
Usually not directly. ICAO Standards and Recommended Practices bind States, which put them into national regulation (in India, the DGCA CARs) and may file differences. Your project is held to the national rule and to any stricter contract or client requirement, so read the regulator’s text and its filed differences, not the ICAO Annex alone.
See It. Understand It. Then Learn How to Engineer It.
Recognising an AGL system visually is the first step. The next step is knowing how to design, install, test, commission and maintain them correctly.
Build Practical AGL Engineering Skills
Go deeper with structured training from Precision AGL Academy, covering:
Learn how each light, sign and circuit works as part of a complete airport lighting system, not just as an isolated diagram.