perf - plas
- perfect gas
- perfect vacuum
- perforate
- perforated
- perforating
- perforating machine
- perform duty
- perform inspection
- perform overhaul
- perform repair
- perform the service bulletin
- performance
- performance check method
- performance codes
- performance correction
- performance curve
- performance data
- performance data computer system
- performance evaluation
- performance flight
- performance information
- performance limitation
- performance loss
- performances
- performed aircraft-kilometer
- performed duty
- performing duty
- periapsis
- periastron
- pericenter
- perifocal
- perifocus
- perigee
- perihelia
- perihelion
- perihelion advance
- perimeter track
- period light
- period of rating currency
- period of revolution
