Abnormal Events And Components Flashcards
What ATA chapter dictates the checks and inspections for abnormal events?
5
What are stages 1 and 2 inspections for abnormal events?
Stage 1- general visual for any signs of damage
Stage 2- more in-depth, dictated by the relevant maintenance manual
What abnormal events could be caused on take off or landing?
Blown tyre Over speed Brake drag/seizure Hard landing High energy stop
What types of abnormal events could occur during flight?
Bird strike Tail strike Lightning Volcanic ash condition High intensity radiated fields (HIRF) Severe turbulence
What is the general altitude range when lightning strikes are more likely to occur and what phases of slight are most affected?
5,000-15,000
Climb and descend phases
What sort of areas would the initial entry point be found?
Radome Fwd fuselage Empanage Nacelle Wing tips
What causes the glow in the initial stages of a lightening strike?
Ionisation of the air around those areas due to an increased electromagnetic field from those areas
How does lightning exit the aircraft?
By travelling through the conductive outer skin to extremities such as the tail
What actions must be done when a lightning strike occurs?
General visual inspection for damage (phase 1)
Detailed inspection upon discovery of damage (phase 2)
What are the two types of lightning damage?
Direct (burn marks, etc.)
Indirect (electrical system damage)
What must be done if a lightning strike causes a system malfunction?
Full inspection of defective system
What are the hole size left by a typical and high intensity lightning strike?
Typical 1/8
High intensity 1/4
Can a lightning strike hole be confined to one area?
No, it can be randomly placed over a large area
What areas does a lightning strike inspection cover?
External areas Static dischargers Fuel system valves IDG and related wires Hydraulic fittings in tail section Radio and nav systems Bonding jumpers
Which external components are most likely to experience lightning strikes?
Nose radome Nacelles Wing tips Horizontal stab tips Elevators Ends of leading edge flap tracks Trailing edge track fairings Landing gear Water waste masts Pitot probes External lights
