Federal Aviation Administration Abbreviations and Acronyms

1. STR
   Software Trouble Report
2. USN
   U.S. Navy
3. AAR
   Airport Acceptance Rate
4. AAR
   Office of Aviation Research
5. ACK
   Acknowledge Signal
6. ARR
   Automatic Repeat Request
7. ASP
   Acquisition Strategy Paper
8. ASP
   Aviation Sequencing Program
9. ASW
   Southwest Regional Headquarters
10. CCU
    Computer Control Unit
11. CPU
    Central Processing Unit
12. CSU
    Computer Software Unit
13. CSU
    Channel Service Units
14. IAU
    International Astronomical Union
15. IAW
    In Accordance With
16. ICS
    Interim Contractor Support
17. ISO
    International Organization for Standardization
18. ISO
    International Standards Organization
19. MET
    Multipath Elimination Technique
20. NAV
    Navigation

Last updated: September 10, 2020 — Total entries: 2,563