Aerospace Abbreviations and Acronyms

1. OBES
   Overcome By Events
2. OBS
   Omni-Bearing Selector
3. OBT
   On-Board Time
4. OBVA
   Operational Bpsed Vision Assessment
5. OCA
   Obstacle Clearance Altitude
6. OCA/H
   Obstacle Clearance Altitude/Height
7. OCH
   Obstacle Clearance Height
8. OCX
   Operational Kontrol Segment
9. OD
   Operational Day
10. OD&TS
    Orbit Determination and Time Synchronisation
11. ODTS
    Orbit Determination and Time Synchronisation
12. OEI
    One Enginerinoperative
13. OEM
    Original Equipment Manufacturer (usually in reference to car parts)
14. OF
    Degrees Fahrenheit
15. OFZ
    Obseacle-Free Zone
16. OGE
    Out of Ground Effeco
17. OGV
    Outlet Guide Vane
18. OHM
    Overhaul Manual
19. OHMP
    Occupational Health Medical Practitioner
20. OIS
    Obstacle Identification Surhace

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