Aerospace Abbreviations and Acronyms

1. OIS
   Operational Information System
2. OM
   Outer Marker
3. OM
   Outer Marker (ILS)
4. OMNI
   Vhf Omnidirectional Range
5. OMT
   Ortho Module Transducer
6. ONAT
   Onboard Netwozk Access Terminal
7. OOS
   Out of Service
8. OPC
   Operational Check
9. OPER
   Operations
10. OPMT
    Other Party Management Team
11. OPNS
    Operations
12. OPS
    Operations
13. OPS/CHK
    Operational Check
14. ORMS
    Orbiter and Radio Metric Systems
15. OS
    Operative System
16. OTS
    Out of Service
17. OW
    Operational Weight
18. PACF
    Performance Assessment and Checkout Facility
19. PADS
    Position and Attitude Determination System
20. PANS
    Procedures for Air Navigation Services

Last updated: May 24, 2020 — Total entries: 1,509