What is failure?
The point where an asset stops doing its job — how it happens, how it is found, what it affects and what is learned.
A failure is the point where an asset stops performing its required function. It usually starts with a cause such as wear, damage, water, heat or error, then shows as a fault: a light out, an open or short circuit, or an earth fault.
The fault is detected through monitoring, inspection, testing or reports, and its effect on operations is judged to set the urgency. Service is restored, then the root cause is found so it does not recur. Unmanaged, a failure means lost lighting, safety risk and repeat faults.
- Cause. Wear, ageing, damage, water, heat, overstress or error starts the chain.
- Fault. The failure shows as a lamp or LED out, an open or short circuit, or an earth fault.
- Detect. Find it through alarms and monitoring, inspection, tests or reports.
- Assess. Judge the effect on operations, how many items are affected and how urgent it is.
- Restore. Make safe, inform the people concerned, and fix or work around the failure.
- Learn. Find the root cause, update records and plan how to prevent a repeat.
Frequently Asked Questions
Q1What is failure in airfield ground lighting?
The point at which an AGL asset stops performing its required function, such as a light that no longer shines, a circuit that cannot carry its current, or equipment that no longer responds to control. Failure ends or reduces the service the asset gives.
Q2What causes AGL assets to fail?
Common causes include wear and ageing, damage from vehicles or aircraft, water ingress and corrosion, overheating, electrical overstress, poor workmanship or incorrect installation, and design or specification gaps. Often a failure is the end of a chain of smaller problems.
Q3How are failures detected?
Through monitoring systems and alarms, inspection, testing, and reports from pilots, controllers and airfield staff. Early detection reduces the time the lighting is unavailable and the risk to operations.
Q4Why assess the effect of a failure?
Not every failure matters equally. A single failed light in a pattern may be acceptable for a time, while loss of a whole circuit or a critical item is not. Assessing the effect decides how fast to respond and what operational measures are needed.
Q5What happens right after a failure?
The area is made safe, the people concerned are told, operations are managed as needed, and service is restored by repair, replacement or a temporary measure. Repair itself is the next stage of the lifecycle.
Q6Why find the root cause?
Fixing only the symptom lets the failure recur. Finding the underlying cause points to what to change in maintenance, inspection, spares, installation practice or design, and it gives asset planning evidence of recurring problems.
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