(rev - adju
- (reverse-)thrust braking
- (reverse-)thrust braking
- abaft
- abandon
- abandoned aerodrome
- abandoned aircraft
- abandoned takeoff
- abandonment
- abatement
- abbreviated plain language
- abbreviated visual approach
- abeam
- ability
- ability to conduct
- ability to perform
- abnormal case
- abnormal operations
- abnormal situation
- aboard
- abolition
- aborted operation
- aborted takeoff
- above ground level
- abreast
- abrupt manoeuvre
- abrupt pullup
- absolute altitude
- absolute ceiling
- absolute deviation
- absolute temperature scale
- absorber
- absorber levered suspension
- absorption
- abutment sleeve
- abutment sleeve assembly
- AC bus
- accelerate
- accelerated combustion
- accelerated flight
- accelerated-stop distance
