31-33 Manufacturing
This industry comprises establishments primarily engaged in one or more of the following: (1) manufacturing aircraft engines and engine parts; (2) developing and making prototypes of aircraft engines and engine parts; (3) aircraft propulsion system conversion (i.e., major modifications to systems); and (4) aircraft propulsion systems overhaul and rebuilding (i.e., periodic restoration of aircraft propulsion system to original design specifications).
| Average Jobs Employed | | 32 |
| Average Loan Given | | $490,520 |
| Number of Loans Given | | 449 |
| Total Amount Loaned | | $220,243,418 |
Establishments primarily engaged in manufacturing guided missile and space vehicle propulsion units and parts are classified in U.S. Industry 336415, Guided Missile and Space Vehicle Propulsion Unit and Propulsion Unit Parts Manufacturing;
Establishments primarily engaged in manufacturing aircraft intake and exhaust valves and pistons and aircraft internal combustion engine filters are classified in Industry 336310, Motor Vehicle Gasoline Engine and Engine Parts Manufacturing;
Establishments primarily engaged in the repair of aircraft engines (except overhauling, conversion, and rebuilding) are classified in Industry 488190, Other Support Activities for Air Transportation;
Research and development establishments primarily engaged in aircraft engine and engine parts R&D (except prototype production) are classified in U.S. Industry 541715, Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology).
Establishments primarily engaged in manufacturing aeronautical instruments are classified in U.S. Industry 334511, Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing.