ATO
Air Traffic Organization
DA
Decision Altitude
EFC
Expect Further Clearance
RVR
Runway Visual Range
A person authorized to provide air traffic control service.
ATCS (Air Traffic Control Specialist)
NWS
National Weather Service
TCH
Threshold Crossing Height
TDZL
Touchdown Zone Lighting
CWC
Center Weather Coordinator
An airborne collision avoidance system based on radar beacon signals that operates independent of ground-based equipment.
TCAS (Traffic Alert & Collision Avoidance System)
AIM
Aeronautical Information Manual
Remote Communications Outlet
ASR
Airport Surveillance Radar
TEIs
A call sign prefix used by FAA aircraft engaged in flight inspection/certification of navigational aids and flight procedures.
FLC (Flight Check)
ICAO
International Civil Aviation Organization
MDA
Minimum Descent Altitude
Runway Centerline Lights
Aviation Routine Weather Report
That portion of civil aviation which encompasses all facets of aviation, except air carriers holding a certificate of public convenience and necessity from the Civil Aeronautics Board and large aircraft commercial operators.
GA (General Aviation)
TPP
US Terminal Procedures Publications
Minimum Obstruction Clearance Altitude
PDR
Preferential Departure Route
FB
Wind and Temperature Aloft Forecast
The ability, as determined by atmospheric conditions and expressed in units of distance, to see and identify prominent unlighted objects by day and prominent lighted objects by night.
VIS (Visibility)