Aeronautics Abbreviations and Acronyms

1. ISP
   Integrated Switching Panel
2. PAR
   Precision Approach Radar
3. R&C
   Rate of Climb
4. R&D
   Rate of Descent
5. SIU
   Satellite Interface Unit
6. STP
   standard temperature and pressure (0° and 1 atm)
7. T&C
   Thermocouple
8. tat
   True Air Temperature
9. tat
   Total Air Temperature
10. Trnsfr
    Transfer
11. f
    Frequency
12. R/T
    Radio Altimeter
13. MAPS
    Minimum Aviation Performance Standards
14. t
    Transmitter
15. t
    True Heading
16. MSSS
    Mode S-Specific Services
17. NAS
    National Airspace System
18. SSR
    secondary surveillance radar (ICAO/FAA)
19. G
    Ground
20. T/R
    Transceiver

Last updated: May 24, 2020 — Total entries: 1,557