Federal Aviation Administration Abbreviations and Acronyms

1. INFOSEC
   Information System Security
2. INMARSAT
   International Maritime Satellite Organization
3. INO
   Indian Ocean Region
4. INS
   Inertial Navigation System
5. IO
   Input/Output
6. IOA
   Independent Operational Assessment
7. IOC
   Initial Operational Capability
8. IOC
   Initial Operating Capability
9. IOD
   Issuance of Data
10. IODC
    Issurance of Data Clock
11. IODE
    Issurance of Data Ephermis
12. IODI
    Issurance of Data Ionosphere
13. IODP
    Issurance of Data PRN mask
14. IODS
    Service Issue of Date
15. ION
    Institute of Navigation
16. IONO
    Ionospheric Determination Processing Algorithm
17. IOP
    Initial Operational Capability
18. IOR
    Indian Ocean Region
19. IOS
    Indian Ocean Station
20. IOT
    Inter-Organizational Transfers

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