CAP 413
Radiotelephony Manual
Chapter 1 Page 6
AIC
Aeronautical Information Circular
AIP
Aeronautical Information Publication
AIRPROX*
Aircraft Proximity (replaces Airmiss/APHAZ)
AIS
Aeronautical Information Services
amsl
Above Mean Sea Level
ANO
Air Navigation Order
APAPI
Abbreviated Precision Approach Path Indicator (pronounced Ay-PAPI)
ATA
Actual Time of Arrival
ATC
Air Traffic Control (in general)
ATCO*
Air Traffic Control Officer (M)
ATD
Actual Time of Departure
ATIS*
Automatic Terminal Information Service
ATS
Air Traffic Service
ATSU
Air Traffic Service Unit
ATSOCAS
Air Traffic Services outside Controlled Airspace
AT-VASIS
Abbreviated T Visual Approach Slope Indicator System (pronounced Ay-
Tee-VASIS)
ATZ
Aerodrome Traffic Zone
C
CAA
Civil Aviation Authority
CAVOK*
Visibility, cloud and present weather better than prescribed values or
conditions (CAVOK pronounced Cav-okay)
C/S
Callsign
CDO
Clearance Delivery Officer
CMATZ
Combined Military Aerodrome Traffic Zone
CPDLC
Controller Pilot Data Link Communication (pronounced See Pee Dee Ell
See) - A means of communication between a controller and aircrew using
data link in conjuction with or instead of voice, for ATC.
CTA
Control Area
CTR
Control Zone
D
DAAIS*
Danger Area Activity Information Service (DAAIS pronounced DAY-ES)
DACS*
Danger Area Crossing Service
DF
Direction Finding
31 March 2011
Summary of Contents for 413
Page 1: ...CAP 413 Radiotelephony Manual Edition 20 www caa co uk Safety Regulation Group ...
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Page 3: ...CAP 413 Radiotelephony Manual Edition 20 Safety Regulation Group 17 November 2011 ...
Page 6: ...CAP 413 Radiotelephony Manual Amendment Number Amendment Date Incorporated by Incorporated on ...
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