| RARotron Aerospace INC. | Beech Mountain | NC | Transportation Equipment Manufacturing336412 | — | ◐ LIKELY ACTIVE |
| RCRtx Corporation | Middletown | CT | Transportation Equipment Manufacturing336412 | — | ◐ LIKELY ACTIVE |
| RCRtx Corporation | Carlsbad | CA | Transportation Equipment Manufacturing336412 | — | ◐ LIKELY ACTIVE |
| SHSafran Helicopter Engines Usa, INC | Grand Prairie | TX | Transportation Equipment Manufacturing336412 | — | ◐ LIKELY ACTIVE |
| STSafran Test Cells | New Brighton | MN | Transportation Equipment Manufacturing336412 | 100-499 | ◐ LIKELY ACTIVE |
| SRScot Riddle | Santee | CA | Transportation Equipment Manufacturing336412 | — | ◐ LIKELY ACTIVE |
| SAServices ACSC OH | Springdale | OH | Transportation Equipment Manufacturing336412 | 100-499 | ◐ LIKELY ACTIVE |
| SDServices Durham NC | Durham | NC | Transportation Equipment Manufacturing336412 | 100-499 | ◐ LIKELY ACTIVE |
| SLServices Lafayette Engine Facility | Lafayette | IN | Transportation Equipment Manufacturing336412 | 100-499 | ◐ LIKELY ACTIVE |
| SMServices McAllen TX | Mcallen | TX | Transportation Equipment Manufacturing336412 | 100-499 | ◐ LIKELY ACTIVE |
| SOServices OWS Cincinnati | Florence | KY | Transportation Equipment Manufacturing336412 | 20-99 | ◐ LIKELY ACTIVE |
| SPServices Propulsion Technologies International PTI | Miramar | FL | Transportation Equipment Manufacturing336412 | 100-499 | ◐ LIKELY ACTIVE |
| SSServices STAC Cincinnati | Springdale | OH | Transportation Equipment Manufacturing336412 | 20-99 | ◐ LIKELY ACTIVE |
| SSServices Strother KS | Winfield | KS | Transportation Equipment Manufacturing336412 | 500+ | ◐ LIKELY ACTIVE |
| SUSKF USA Inc. | Hanover | PA | Transportation Equipment Manufacturing336412 | 20-99 | ◐ LIKELY ACTIVE |
Skilled Manufacturing - Aerospace Division | Traverse City | MI | Transportation Equipment Manufacturing336412 | 100-499 | ◐ LIKELY ACTIVE |
| S1Source 1 Alloys, INC. | Cincinnati | OH | Transportation Equipment Manufacturing336412 | — | ◐ LIKELY ACTIVE |
| SSSpace Structures Complex | Middle River | MD | Transportation Equipment Manufacturing336412 | 20-99 | ◐ LIKELY ACTIVE |
| SSStein Seal Industrial | Telford | PA | Transportation Equipment Manufacturing336412 | 1-19 | ◐ LIKELY ACTIVE |
| SStennis | Stennis Space Center | MS | Transportation Equipment Manufacturing336412 | 20-99 | ◐ LIKELY ACTIVE |
| SASuperior Air Parts | Coppell | TX | Transportation Equipment Manufacturing336412 | 20-99 | ◐ LIKELY ACTIVE |
| SMSzczypski, Michael | New Paris | IN | Transportation Equipment Manufacturing336412 | — | ◐ LIKELY ACTIVE |
| TSTextron Systems - Lycoming Engines | Williamsport | PA | Transportation Equipment Manufacturing336412 | 500+ | ◐ LIKELY ACTIVE |
| TFThe Fuel Cell, INC. | Doral | FL | Transportation Equipment Manufacturing336412 | — | ◐ LIKELY ACTIVE |
| TTurbineAero | Tempe | AZ | Transportation Equipment Manufacturing336412 | 1-19 | ◐ LIKELY ACTIVE |
| TSTurbine Solution, LLC | Vineyard | UT | Transportation Equipment Manufacturing336412 | — | ◐ LIKELY ACTIVE |
| TTTurbine Technologies, INC | Farmington | CT | Transportation Equipment Manufacturing336412 | — | ◐ LIKELY ACTIVE |
| TMTwin Manufacturing CO | South Windsor | CT | Transportation Equipment Manufacturing336412 | — | ◐ LIKELY ACTIVE |
| TMTwin MRO | South Windsor | CT | Transportation Equipment Manufacturing336412 | 100-499 | ◐ LIKELY ACTIVE |
| UDUnison Dayton OH Systems | Dayton | OH | Transportation Equipment Manufacturing336412 | 100-499 | ◐ LIKELY ACTIVE |
| UNUnison Norwich NY | Norwich | NY | Transportation Equipment Manufacturing336412 | 100-499 | ◐ LIKELY ACTIVE |
| USUnison St. George Utah | Saint George | UT | Transportation Equipment Manufacturing336412 | 20-99 | ◐ LIKELY ACTIVE |
| USUnited States Micro Turbine LLC | San Francisco | CA | Transportation Equipment Manufacturing336412 | — | ◐ LIKELY ACTIVE |
| UTUSA TX Austin , OPS (PW) | Austin | TX | Transportation Equipment Manufacturing336412 | 1-19 | ◐ LIKELY ACTIVE |
| VBValco Boren | Duncan | OK | Transportation Equipment Manufacturing336412 | 20-99 | ◐ LIKELY ACTIVE |
| VMVolund Manufacturing, INC | Huntington Beach | CA | Transportation Equipment Manufacturing336412 | — | ◐ LIKELY ACTIVE |
| WLWhitcraft LLC DBA Pursuit Aerospace | Eastford, CT | CT | Transportation Equipment Manufacturing336412 | 100-499 | ◐ LIKELY ACTIVE |
| WAWilliams Aerospace Corporation | Waterford | VA | Transportation Equipment Manufacturing336412 | — | ◐ LIKELY ACTIVE |
| WTWilson's Tools CORP | Huntsville | AL | Transportation Equipment Manufacturing336412 | — | ◐ LIKELY ACTIVE |
| WWixom | Wixom | MI | Transportation Equipment Manufacturing336412 | 100-499 | ◐ LIKELY ACTIVE |
| WMWoodward - MPW | Machesney Park | IL | Transportation Equipment Manufacturing336412 | 20-99 | ◐ LIKELY ACTIVE |
| WRWoodward - RCC | Loves Park | IL | Transportation Equipment Manufacturing336412 | 500+ | ◐ LIKELY ACTIVE |
| ZIZeroavia, INC | Everett | WA | Transportation Equipment Manufacturing336412 | — | ◐ LIKELY ACTIVE |
| AIAeroproducts, INC | Pelzer | SC | Transportation Equipment Manufacturing336412 | — | ◐ LIKELY ACTIVE |
| AAAtf Aerospace LLC | Mesa | AZ | Transportation Equipment Manufacturing336412 | — | ◐ LIKELY ACTIVE |
| ACAvio Capital Limited | Broadview Heights | OH | Transportation Equipment Manufacturing336412 | — | ◐ LIKELY ACTIVE |
| PPParadigm Precision Holdings, LLC | Tempe | AZ | Transportation Equipment Manufacturing336412 | — | ◇ UNVERIFIED |
| 1H107377 - Honeywell Process Solutions | Muncie | IN | Transportation Equipment Manufacturing336412 | — | ◇ UNVERIFIED |
| 1G129700 - Ge Aircraft Engines | Durham | NC | Transportation Equipment Manufacturing336412 | — | ◇ UNVERIFIED |
| AAAC Aerospace Management, LLC | Miami | FL | Transportation Equipment Manufacturing336412 | — | ◇ UNVERIFIED |