NASA Abbreviations and Acronyms

1. C/T
   control and timing
2. CCN
   Contract Change Notice
3. CCN
   Contract Change Notification
4. CCN
   Contract Change Negotiation
5. F/O
   fuel oxidizer
6. L&E
   left-hand engine
7. MANUFACTURER
   Manufacturing
8. R&O
   Rollout
9. R-R
   Rendezvous and Recovery
10. AAMP
    Advanced Architecture Microprocessor
11. CCW
    Counterclockwise
12. MCW
    Modulated Continuous Wave
13. I/O
    Input/Output
14. I/O
    Inlet and Outlet
15. SCRS
    Serialized Control and Reporting System
16. SCRS
    Stripchart Recording System
17. AASM
    Association of American Steel Manufacturers
18. ACI
    Allocated Configuration Identification
19. ACME
    Attitude Control and Maneuvering Electronics
20. ADSA
    alternate demonstration structural article

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