Federal Aviation Administration Abbreviations and Acronyms

1. IFM
   Interface Management
2. IFR
   Instrument Flight Rules
3. IGEB
   Interagency Gps Executive Board
4. IGES
   Initial Ground Earth Station
5. IGMP
   Internet Group Management Protocol
6. IGP
   Ionospheric Grid Point
7. ILS
   Instrument Landing System
8. ILS
   Integrated Logistics Support
9. ILSMT
   Integrated Logistics Support Management Team
10. ILSP
    Integrated Logistics Support Plan
11. IM
    Interface Management
12. IM
    Intermodulation
13. IMARSAT
    International Maritime Satellite Organization
14. IMAS
    Initial Missed Approach Segment
15. IMC
    Instrument Meteorological Conditions
16. IMCS
    Interim Monitor and Control Software
17. IMSO
    International Maritime Satellite Organization
18. IMT
    Integrated Management Team
19. IMU
    Inertial Measurement Unit
20. IN
    Institute of Navigation

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