| HAHammerhead Aviation LLC | El Cajon | CA | 20–99 | ◐ LIKELY ACTIVE |
| HEHarper Engineering Company | Renton | WA | 20–99 | ◐ LIKELY ACTIVE |
| HMHarris Manufacturing Solutions, LLC | Lewisville | TX | — | ◐ LIKELY ACTIVE |
Hartzell Propeller Composite Facility | Piqua | OH | 20–99 | ◐ LIKELY ACTIVE |
| HMHirschler Manufacturing | Kirkland | WA | 20–99 | ◐ LIKELY ACTIVE |
| HAHonda Aircraft Company, LLC | Greensboro | NC | 500+ | ◐ LIKELY ACTIVE |
| HIHoneywell International Aftermarket Services-memphis | Memphis | TN | — | ◐ LIKELY ACTIVE |
| HIHoneywell International INC. | Tulsa | OK | — | ◐ LIKELY ACTIVE |
| HIHoneywell International INC. | Redmond | WA | — | ◐ LIKELY ACTIVE |
| HIHoneywell International INC. | Torrance | CA | — | ◐ LIKELY ACTIVE |
| HIHoneywell International INC. | Rocky Mount | NC | — | ◐ LIKELY ACTIVE |
| HTHr Textron INC | Valencia | CA | — | ◐ LIKELY ACTIVE |
| HAHydro-aire Aerospace CORP | Burbank | CA | — | ◐ LIKELY ACTIVE |
| IDIlc Dover, LP - Frederica | Frederica | DE | — | ◐ LIKELY ACTIVE |
| IAItt Aerospace Controls LLC | Valencia | CA | — | ◐ LIKELY ACTIVE |
| JAJ. A. Reinhardt & Co., INC. | Mountainhome | PA | — | ◐ LIKELY ACTIVE |
| JCJemco Components & Fabrication, INC. | Kirkland | WA | — | ◐ LIKELY ACTIVE |
| JAJet Aerospace Coatings and Landing Systems (jet Acls) | Rincon | GA | — | ◐ LIKELY ACTIVE |
| JAJoby Aviation Concord | Concord | CA | 20–99 | ◐ LIKELY ACTIVE |
| JAJoby Aviation Dayton | Vandalia | OH | 1–19 | ◐ LIKELY ACTIVE |
| KAKaiser Aircraft Industries, INC | Birmingham | AL | — | ◐ LIKELY ACTIVE |
| KAKaman Aerospace Helicopters Division | Bloomfield | CT | — | ◐ LIKELY ACTIVE |
| KCKaman Composites Wichita INC | Wichita | KS | — | ◐ LIKELY ACTIVE |
| KMKerns Manufacturing CORP. | Long Island City | NY | — | ◐ LIKELY ACTIVE |
| KTKidde Technologies, INC | Wilson | NC | — | ◐ LIKELY ACTIVE |
| K2Knots 2u, LTD. | Burlington | WI | 20–99 | ◐ LIKELY ACTIVE |
| LALanic Aerospace LLC | Huntington Beach | CA | — | ◐ LIKELY ACTIVE |
| LELeading Edge Aero, LLC | Bethel | CT | — | ◐ LIKELY ACTIVE |
| LILearjet INC | Wichita | KS | — | ◐ LIKELY ACTIVE |
| LMLockheed Martin Aeronautical Systems | Marietta | GA | — | ◐ LIKELY ACTIVE |
| LMLockheed Martin Aeronautics Company | Greenville | SC | — | ◐ LIKELY ACTIVE |
| LMLockheed Martin Corporation Palmdale Campus (1513) | Palmdale | CA | 500+ | ◐ LIKELY ACTIVE |
| LMLockheed Martin, Sof Glss | Fort Walton Beach | FL | — | ◐ LIKELY ACTIVE |
| LTLudlow Tool INC | Agawam | MA | — | ◐ LIKELY ACTIVE |
| LSLuminescent Sys INC | Lebanon | NH | — | ◐ LIKELY ACTIVE |
| MAMa53 Ametek Aerospace Products | Wilmington | MA | 20–99 | ◐ LIKELY ACTIVE |
| MEMartinic Engineering INC | Tolleson | AZ | 20–99 | ◐ LIKELY ACTIVE |
| MAMaryland Air National Guard | Baltimore | MD | — | ◐ LIKELY ACTIVE |
| MDMcdonnell Douglas B-98 | Long Beach | CA | — | ◐ LIKELY ACTIVE |
| MDMcdonnell Douglas CORP | Hazelwood | MO | — | ◐ LIKELY ACTIVE |
| MAMeggitt Aircraft Braking Systems CORP | Danville | KY | — | ◐ LIKELY ACTIVE |
| MAMeggitt Aircraft Braking Systems Corporation | Akron | OH | — | ◐ LIKELY ACTIVE |
| MAMeggitt Aircraft Braking Systems Kentucky Corporation | Danville | KY | — | ◐ LIKELY ACTIVE |
| MAMetal Arts Machine Co LLC | Wichita | KS | 20–99 | ◐ LIKELY ACTIVE |
| MAMetro Aviation INC | Shreveport | LA | — | ◐ LIKELY ACTIVE |
| MAMid-continent Aircraft Corporation | Hayti | MO | — | ◐ LIKELY ACTIVE |
| MRMiddle River Aerostructure Systems | Middle River | MD | — | ◐ LIKELY ACTIVE |
| MSMission Systems Orchard Park - 10 Centre | Orchard Park | NY | 20–99 | ◐ LIKELY ACTIVE |
| MIMoog, Inc. - Salt Lake Operations | West Valley City | UT | 100–499 | ◐ LIKELY ACTIVE |
| MAMooney Aviation Company | Kerrville | TX | — | ◐ LIKELY ACTIVE |