NASA Abbreviations and Acronyms

1. PHM
   Per Hundred Million
2. PHOTO
   Photograph
3. PHP
   Payload Handling Panel
4. PHR
   Payload Hazardous Report
5. PHS
   Payload Handling Station
6. PHSF
   Payload Hazardous Servicing Facility
7. PI
   Principal Investigator
8. PI
   Payload Interrogator
9. PI
   Program Integration
10. PI
    Program Introduction
11. PI
    Principle Investigator
12. PI
    Pen and Ink (document Update)
13. PI
    Preliminary Investigation
14. PI
    Procurement Item
15. PIA
    Preinstallation Acceptance
16. PIA
    Project Impact Analysis
17. PIAR
    Project Impact Analysis Report
18. PIB
    Pyrotechnic Installation Building
19. PIC
    Pyro Ignition Control
20. PIC
    Pyro Initiator Controller

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