Royal Military Abbreviations and Acronyms
- STFSeaplane Training Flight
- STLTSatellite
- STNStation
- STNStation Terrestre de Navire
- STNStation Casinos, Inc.
- STNStation Terrienne de Navire
- STNStansted Airport railway station
- SUSupport Unit
- SUServicing Unit
- SUPYSupernumery
- SWOStation Warrant Officer
- SWTSSupplementary Wireless Telegraphy School
- TACEVALTactical Evaluation
- TADUTraining Aids Development Unit
- TADUTarget Aircraft Development Unit
- TAFSUTactical Air Force Support Unit
- TAGTelegraphist Air Gunner
- TAMUTransport Aircraft Modification Unit
- TAMUTransport Aircraft Maintenance Unit
- TBtorpedo-bomber
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