Aerodrome Standards and Safety Oversight (AGA)
The aerodrome as a system
AGA oversight treats the aerodrome as a certified system rather than a piece of real estate. The core elements are the aerodrome certificate (or licence) issued by the authority, the aerodrome manual describing the operator's arrangements, and a safety management system with hazard identification, risk assessment and occurrence reporting. Physical standards cover runway and taxiway dimensions and separations, strip and runway end safety areas, obstacle limitation surfaces, visual aids (markings, lights, signs), and rescue and fire fighting category.
Concepts to master
Understand the movement area and the distinction between manoeuvring area and apron. Learn the purpose of the runway strip (to reduce damage if an aircraft runs off) and the clearway/stopway concepts. Know that visual aids must be inspected and maintained to a standard, and that a foreign object debris programme and a wildlife hazard management programme are required elements. Understand that changes to the aerodrome - new construction, work in progress, temporary obstacles - require assessment, publication via NOTAM, and coordination with operators. Maintenance engineers should understand that aerodrome condition affects aircraft operation and that pavement strength is published (PCN) so operators can check compatibility (ACN).
Traps in questions
- Confusing the runway strip with the runway end safety area; they serve different purposes and have different extents.
- Assuming NOTAM is optional for works in progress; it is a required communication.
- Mixing ACN (aircraft) with PCN (pavement) - the letters themselves are the clue.
- Forgetting that RFF category follows the largest aircraft using the aerodrome, not the average.
Rule of thumb
Assess, mitigate, publish, monitor. Worked example: a taxiway is closed for resurfacing. The operator assesses the risk of rerouting on the apron, mitigates by marking and lighting a diversion, publishes a NOTAM, and monitors compliance - all four steps are needed before the answer is complete.