aerospace
347 abbreviations
| Abbreviation | Meaning | |
|---|---|---|
| QRH | quick reference handbook | |
| R | (as a prefix:) restricted airspace | |
| RA | radio altitude or radar altimeter | |
| RA | resolution advisory (in the context of TCAS) | |
| RAS | rectified air speed | |
| RDH | reference datum height for ILS | |
| RESA | runway end safety area | |
| RNAV | area navigation | |
| RNP | required navigation performance | |
| RSA | runway safety area | |
| RSR | en-route surveillance radar | |
| RT | radiotelephony | |
| RTO | rejected take-off | |
| RVR | runway visual range | |
| RVSM | reduced vertical separation minima | |
| RW | ramp weight | |
| RWY | runway | |
| SAS | stability augmentation system | |
| SCAP | Standard Computerized Airplane Performance | |
| SESAR | Single European Sky ATM Research | |
| SID | standard instrument departure | |
| SIGMET | Significant meteorological advisory | |
| SMOH | Since major overhaul | |
| SMR | surface movement radar | |
| SOC | start of climb at missed approach | |
| SODPRO | simultaneous opposite direction parallel runway operations | |
| SOP | standard operating procedure | |
| SR | sunrise | |
| SS | sunset | |
| STAR | standard terminal arrival route | |
| TA | traffic advisory (see TCAS) | |
| TAA | terminal arrival area | |
| TACAN | tactical air navigation | |
| TAF | terminal aerodrome forecast | |
| TAM | total airport management | |
| TAR | terminal approach radar | |
| TAS | true airspeed | |
| TAWS | terrain awareness and warning system | |
| TCA | terminal control area | |
| TCAS | traffic collision avoidance system | |
| TCH | threshold crossing height | |
| TDZ | touchdown zone | |
| TERPS | terminal procedures | |
| TFR | temporary flight restriction | |
| TGL | temporary guidance leaflet | |
| THR | runway threshold | |
| THS | trimmable horizontal stabilizer, see tailplane | |
| TLD | time-limited dispatch | |
| TO/GA | take-off/go around | |
| TOD | top of descent |