cause of aircraft trouble

trouble cause

potential danger area (trouble area)

trouble-spot

extraction trouble

trouble

engine trouble

ignition trouble

trouble-free operation

contribute to the cause of peace

deviating cause

cause factor

root cause

occurrence cause

determinate cause

eliminate cause

failure cause

primary cause

second cause

cause immense destruction

training aircraft (tng acft) / trainer aircraft

aircraft accident (flight accident; aircraft mishap)

aircraft armaments / aircraft weapons

aircraft accident / flight accident, aircraft mishap

aircraft mishap / flight accident, aircraft accident

aircraft modernization / aircraft upgrade

aircraft track and balance (adjusting balance of aircraft)

aircraft upgrade / aircraft modernization

aircraft weapons / aircraft armaments

flight accident / aircraft accident, aircraft mishap

low flying aircraft / low-flying aircraft

anti-aircraft artillery observation aircraft

airborne early warning aircraft