A Annex
AC Advisory Circular
A/C Aircraft
AAL Altitude above Aerodrome Level
ACAS Airborne Collision Avoidance System
AD Airworthiness Directive
AEA Association of European Airlines
AFE Above Field Elevation
AFM Approved Flight Manual
AFS Auto-flight System
AGL Altitude above Ground Level
AHM IATA Airport Handling Manual
AI Active Implementation
AIP Aeronautical Information Publication
AMO Approved Maintenance Organisation
AMU Areas of Magnetic Unreliability
Anx Annex
AOC Air Operator Certificate
AOM Aircraft Operating Manual
APU Auxiliary Power Unit
AQP Advanced Qualification Programme
ARFF Airport Rescue Fire Fighting
ASD Accelerated Stop Distance
ATA Actual Time of Arrival
ATC Air Traffic Control
ATD Actual Time of Departure
ATL Aircraft Technical Log
ATS Air Traffic Services
BP Best Practice
CAA Civil Aviation Authority