Federal Aviation Administration Abbreviations and Acronyms

1. NPRM
   Notice of Proposed Rule Making
2. NPV
   Non-Precision Approach with Vertical Guidance
3. NQSS
   Network Quality of Service Subsystem
4. NR
   Not Applicable
5. NRCS
   National Radio Communications Systems
6. NRE
   Non-Recurring Engineering
7. NRZ
   Non-Return To Zero
8. NRZ-L
   Non-Return To Zero
9. NS
   Nanosecond
10. NS
    Non-Standard C/A
11. NSDU
    Network Service Data Unit
12. NSE
    Navigation System Error
13. NSEC
    Nanosecond
14. NSI
    Network Subsystem Interface
15. NSP
    Non-Standard P-code
16. NSTB
    National Satellite Test Bed
17. NT&T
    Nippon Telegraph and Telephone
18. NTE
    Not To Exceed
19. NTP
    Network Terminal Protocol
20. NTP
    National Transportation Policy

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