NASA Abbreviations and Acronyms

1. IAB
   Ius Assembly Building
2. IACS
   Inertial Attitude Control System
3. IAD
   Interface Agreement Document
4. IAD
   Interface Analysis Document
5. IAF
   Interactive Facility
6. IAH
   Interface Attachment Hardware
7. IAIMS
   Information Management System
8. IAL
   International Algebraic Language
9. IAL
   Immediate Action Letter
10. IAN
    Institutional Area Network
11. IAPU
    Improved Auxiliary Power Unit
12. IARS
    Independent Air Revitalization System
13. IAS
    Impact Assessment Sheet
14. IAS
    Integrated Avionics System
15. IB
    Inboard
16. IB
    Inert Building
17. IB
    Instruction Book
18. IBC
    Impurity-Band Conductor
19. IBEW
    International Brotherhood of Electrical Workers
20. IBEWS
    International Brotherhood of Electrical Workers

Last updated: May 6, 2025 — Total entries: 14,020