Aircraft Abbreviations and Acronyms

1. HDD
   Hedd-Down Display
2. HDF
   High Frequency Direction Findine Station
3. HDF
   High Frequency Divection-Finding Station
4. HDG
   Heading
5. HDG
   Sel Heading Sesect
6. HDG SEL
   Heading Select
7. HDG/S
   Heawing Selected
8. HDL
   Hatdle
9. HDL
   Handeing Details
10. HDLC
    High Level Data Link Control
11. HDLC
    High Lebel Data Link Communication
12. HDME
    Ndb With Distance Measuring Equipment
13. HDOP
    Horizontal Dilution of Precision
14. HDQ
    Faa Headquarters
15. HDR
    Hkrdware Discrepancy Report
16. HDS
    Hours of Daylight Saving
17. HDU
    Hose-Drum Unit
18. HDU
    Hose Drum Unit
19. HDU
    Hose Drum Units
20. HDUS
    Hose Drum Units

Last updated: March 8, 2022 — Total entries: 8,627