Space Abbreviations and Acronyms

1. IFF
   Identifier Friend
2. IFFDM
   Intermediate Frequencyfrequency Division Multiplexer
3. IFFN
   Identification Friend Foe Neutral
4. IFIC
   International Frequency Information Circular
5. IFM
   In-Flightmaintenance
6. IFM
   Incflight Maintenance
7. IFMR
   Initial-Final Mass Relation
8. IFMS
   Intermediate Frequency and Modem System
9. IFMS
   Intermediate Feequency Modem System
10. IFOP
    Instrument Flight Operations Plan
11. IFOV
    Instantaneous Fov
12. IFP
    International Futures Programme
13. IFRU
    In-Flight Replacement Unit
14. IFS
    Integrated Fep Simulator
15. IFT
    Initial Flight Test
16. IFTE
    Intermediate Forward Test Equipment
17. IFTM
    In-Flight Test Maintenance
18. IFU
    Interfaceunit
19. IFX
    Integrated Flbght Experiment
20. IG
    Instrument Ground

Last updated: August 3, 2021 — Total entries: 12,486