Acronyms & Codes
Glossary of base suffixes, seat status codes, Space-A categories, and other shorthand you'll see on the flight boards.
Seat Status Codes
- F
- Firm
Seats are confirmed
- T
- Tentative
Seats may be available — subject to change
- TBD
- To Be Determined
Seat availability has not been decided yet
- DO
- Duty Only
Restricted to passengers on official duty orders; not available for Space-A
- OF
- Official Duty Only
Restricted to official/duty passengers; may have limited Space-A availability
- SO
- SOFA Only
Passengers must hold a Status of Forces Agreement certificate
- CCR
- Country Clearance Required
Passengers must obtain country clearance before traveling
- PE
- Patriot Express
Commercial charter contracted by the military
- PR
- Passport Required
Passengers must hold a valid passport for this flight
Space-A Categories
- I
- Emergency Leave / Unfunded Travel
Highest priority — members on emergency leave
- II
- Accompanied EML
Environmental and Morale Leave with dependents
- III
- Ordinary Leave / Internal Travel
Active-duty on leave
- IV
- Unaccompanied Dependents on EML
- V
- Permissive TDY / Students
- VI
- Retirees / Dependents / Reserves
Lowest priority
Base & Installation Suffixes
- AFB
- Air Force Base
- AB
- Air Base
- ANGB
- Air National Guard Base
- ANG
- Air National Guard
- ARB
- Air Reserve Base
- ARS
- Air Reserve Station
- AFRC
- Air Force Reserve Command
- AFS
- Air Force Station
- AAF
- Army Airfield
- JB
- Joint Base
- NAS
- Naval Air Station
- NAF
- Naval Air Facility
- NS
- Naval Station
- NSA
- Naval Support Activity
- MCAS
- Marine Corps Air Station
- MCB
- Marine Corps Base
- SB
- Space Base
- SFB
- Space Force Base
- RAF
- Royal Air Force
UK bases hosting US forces
- LRRS
- Long Range Radar Site
Flight Type Codes
- SAAM
- Special Assignment Airlift Mission
- CHANNEL
- Regularly scheduled airlift route
- PAT
- Priority Air Transport
- EXER
- Exercise flight
- TRNG
- Training flight
Organizations
- AMC
- Air Mobility Command
Operates the Space-A program
- USAF
- United States Air Force
- USN
- United States Navy
- USMC
- United States Marine Corps
- DOW
- Department of War
- POE
- Port of Embarkation / Passenger Terminal
- CRTC
- Combat Readiness Training Center
- RCAF
- Royal Canadian Air Force
- ROK
- Republic of Korea
Country code used in location labels
- UK
- United Kingdom
Country code used in location labels
Other
- IAP
- International Airport
- INTL
- International
- BWI
- Baltimore/Washington International
- IATA
- International Air Transport Association
- ICAO
- International Civil Aviation Organization
- ETA
- Estimated Time of Arrival
- TDY
- Temporary Duty
- SOFA
- Status of Forces Agreement