1670 - PARACHUTES; AERIAL PICK UP, DELIVERY, RECOVERY SYSTEMS; AND CARGO TIE DOWN EQUIPMENT
1720 - AIRCRAFT LAUNCHING EQUIPMENT
1730 - NO DESCRIPTION AVAILABLE
1740 - AIRFIELD SPECIAL TRUCKS & TRAILERS
2935 - ENGINE SYSTEM COOLING COMPONENTS, AIRCRAFT PRIME MOVING
2995 - MISCELLANEOUS ENGINE ACCESSORIES, AIRCRAFT