1. A & P - Airframe & Powerplant (mechanic)
2. ABOD - Aviation Board of Directors
3. ACCO - Air Carrier/Commercial Operator
4. ACETA - Aerial Capture, Eradication, and Tagging of Animals
5. AD - Airworthiness Directive
6. AGL - Above Ground Level
7. AIM - Airman Information Manual
8. ALSE - Aviation Life Support Equipment
9. AMS - Aviation Management Seminar
10. AMIS - Aviation Mishap Information System
11. AMRB - Aircraft Mishap Review Board
12. AMTS - Aviation Management Training for Supervisors
13. APO - Aviation Program Overview
14. ARP - Aviation Review Program
15. A/S-PMB - Assistant Secretary, Policy, Management and Budget
16. ASM - Aviation Safety Manager
17. ATC - Air Traffic Controller
18. BOA - Basic Ordering Agreement
19. CFI - Certified Flight Instructor
20. CG - Center of Gravity
21. CFR - Code of Federal Regulations
22. CO - Contracting Officer
23. COR - Contracting Officer’s Representative
24. COTR - Contracting Officer’s Technical Representative
25. CWN - Call When Needed (contract)
26. DIAR - Department of the Interior Acquisition Regulation
27. DM - Departmental Manual
28. DOI - Department of the Interior
29. DOD - Department of Defense
30. DASHO - Designated Agency Safety and Health Official
31. ELT - Emergency Locator Transmitter
32. ETA - Estimated Time of Arrival
33. FAA - Federal Aviation Administration
34. FAR - Federal Aviation Regulations
35. FCC - Flight Coordination Center
36. FOIA - Freedom of Information Act
37. FPMR - Federal Property Management Regulations
38. FSDO - Flight Standards District Office
39. FSS - Flight Service Station
40. GBL - Government Bill of Lading
41. GTR - Government Transportation Request
42. IAT - Interagency Aviation Trainer
43. IB - Information Bulletin
44. IFB - Invitation for Bid
45. IFR - Instrument Flight Rules
46. IHOG - Interagency Helicopter Operations Guide
47. IIC - Aircraft Accident Investigator-In-Charge
48. IMC - Instrument Meteorological Conditions
49. ISC - Interior Service Center
50. MAP - Mishap Action Plan (replaces Aircraft Pre-Accident Plan)
51. MDA - Minimum Descent Altitude
52. MEA - Minimum Enroute Altitude
53. MOU - Memorandum of Understanding
54. NTSB - National Transportation Safety Board
55. NVG - Night Vision Goggles
56. OAS - Office of Aircraft Services
57. OG - Operation Guide
58. OPAC - On-line Payment and Collection
59. OPM - Operational Procedures Memoranda (issued by OAS)
60. OMB - Office of Management and Budget
61. PI - Project Inspector
62. PIC - Pilot-in-Command
63. PRB - Pilot Review Board
64. PPE - Personal Protective Equipment
65. RVR - Runway Visual Range
66. SIC - Second-in-Command
67. STC - Supplemental Type Certificate
68. TBO - Time Between Overhaul
69. VFR - Visual Flight Rules
70. VMC - Visual Meteorological Conditions