Civil aviation dictionary
Aviation glossary
Terms, abbreviations and procedures explained without unnecessary jargon, with English names and clear definitions.
- Total entries
- 2480
- Terms
- 435
- Abbreviations
- 2045
O
- Abbreviationoperational meteorological (information)
OPMET stands for operational meteorological (information) in FAA terminology.
- AbbreviationOperational Safety Assessment
OSA stands for Operational Safety Assessment in FAA terminology.
- AbbreviationOperations Control Center
OCC stands for Operations Control Center in FAA terminology.
- AbbreviationOPERATIONS OVER PEOPLE (OOP)
Operations of small unmanned aircraft over people.
- AbbreviationOperations Planning Services, Air Traffic Organization
AJP stands for Operations Planning Services, Air Traffic Organization in FAA terminology.
- AbbreviationOPERATOR (UAS)
The owner and/or remote pilot of a UAS.
- Abbreviationopposite direction traffic
OPDT stands for opposite direction traffic in FAA terminology.
- Abbreviationoptical landing system
OLS stands for optical landing system in FAA terminology.
- Abbreviationoptimum working frequency
OWF stands for optimum working frequency in FAA terminology.
- Flying skillsOPTION APPROACH
An approach requested and conducted by a pilot which will result in either a touch‐and‐go, missed approach, low approach, stop‐and‐go, or full stop landing.
- Aircraft and systemsORGANIZED TRACK SYSTEM
A series of ATS routes which are fixed and charted; i.e., CEP, NOPAC, or flexible and described by NOTAM; i.e., NAT TRACK MESSAGE.
- Abbreviationoriginal flight plan
OFP stands for original flight plan in FAA terminology.
- Abbreviationour message
OMSG stands for our message in FAA terminology.
- Abbreviationout of control area
OCTLA stands for out of control area in FAA terminology.
- Abbreviationout of controlled airspace
OCAS stands for out of controlled airspace in FAA terminology.
- OperationsOUTER FIX
A general term used within ATC to describe fixes in the terminal area, other than the final approach fix.
- OperationsOUTER FIX TIME
A calculated time to depart the outer fix in order to cross the vertex at the ACLT.
- OperationsOUTER MARKER
A marker beacon at or near the glideslope intercept altitude of an ILS approach.
- Abbreviationoutside air temperature
OAT stands for outside air temperature in FAA terminology.
- AbbreviationOVER
OVR stands for OVER in FAA terminology.
- Abbreviationoverflight traffic
OTFC stands for overflight traffic in FAA terminology.
- Abbreviationoverhead approach
OA stands for overhead approach in FAA terminology.
- Flying skillsOVERHEAD MANEUVER
A series of predetermined maneuvers prescribed for aircraft (often in formation) for entry into the visual flight rules (VFR) traffic pattern and to proceed to a landing.
- Abbreviationoverseas flight assistance service
OFAS stands for overseas flight assistance service in FAA terminology.