navigation acronyms, abbreviations and definitions - International ...

AOC Air Operator’s Certificate
AOC aircraft operations centre
AOC airline operational control
AOC airline operations communications
AOC auxiliary output chip
AOM aircraft operating manual
AOO area of operations
AOPA Aircraft Owners and Pilots Association
AOR Atlantic Ocean Region (-E or -W) (of Inmarsat satellites)
AOR-E at 15.5ºW, AOR-W at 98ºW.
AP access point
AP air position
AP Air Publication (RAF) (AP3456 covers navigation)
AP assumed position (estimated pos’n for astronomical sight reduction)
AP autopilot
APAC Asia and Pacific (ICAO area)
APAPI abbreviated precision approach path indicator
APC airline passenger correspondence (eg e-mail, internet, phone)
APC approach control(ler) (ATC)
API air position indicator
API application programming interface
APL Advanced Positioning Layer (LBS)
APL airport pseudolite
APNT alternative positioning, navigation and timing (for when GNSS fails)
APOLO Advanced POsition LOcator (train location system using GNSS)
APP approach (control)
APR approach control radar
APRS automatic position reporting system
APTS Advanced Public Transport System
APU auxiliary power unit
APV-I Approach with Vertical Guidance - 1 (to runway)
Requires accuracies (95%) of 220 m H, 20 m V. HAL 556 m, VAL
50 m. Time to alert 10 s. Definition may be changed by FAA in 2002
-03.
APV-II Approach with Vertical Guidance - 2 (to runway)
Requires accuracies (95%) of 16 m H, 8 m V. HAL 40 m, VAL 20 m.
Time to alert 6 s.
AR augmented reality (VR images overlaid on the real world)
AR autoregressive (form of Kalman filter)
ARA airspace restricted area
ARAIM advanced RAIM
ARB Airworthiness Requirements Board (CAA)
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March 2012