NOTAM Contractions Abbreviations and Acronyms

1. CHK
   Check
2. CHNG
   Change
3. CI
   Cirrus
4. CIG
   Ceiling
5. CK
   Check
6. CKW
   Clockwise
7. CL
   Centerline
8. CL
   Closed
9. CLB
   Climb
10. CLD
    Closed
11. CLD
    Cloud
12. CLG
    Ceiling
13. CLKWS
    Clockwise
14. CLNC DEL
    Clearance Delivery
15. CLR
    Clearance, clear(s), cleared to
16. CLR
    Clear at or below 12,000 feet (AWOS/ASOS report) (METAR)
17. CLRS
    Clear and Smooth
18. CLSD
    Closed
19. CLW
    Clockwise
20. CM
    Communications

Last updated: September 14, 2020 — Total entries: 1,482