1510 - AIRCRAFT, FIXED WING
1520 - AIRCRAFT, ROTARY WING
1550 - DRONES
1560 - AIRFRAME STRUCTURAL COMPONENTS
1610 - AIRCRAFT PROPELLERS AND COMPONENTS
1620 - AIRCRAFT LANDING GEAR COMPONENTS
1680 - MISCELLANEOUS AIRCRAFT ACCESSORIES AND COMPONENTS
1730 - NO DESCRIPTION AVAILABLE
2840 - NO DESCRIPTION AVAILABLE
AC11 - R&D- DEFENSE SYSTEM: AIRCRAFT (BASIC RESEARCH)
AC15 - DEFENSE AIRCRAFT (OPERATIONAL)
R425 - ENGINEERING AND TECHNICAL SERVICES
R429 - SUPPORT- PROFESSIONAL: EMERGENCY RESPONSE/DISASTER PLANNING/PREPAREDNESS SUPPORT