| MDMcdonnell Douglas Tulsa | Tulsa | OK | — | ◇ UNVERIFIED |
| MIMedaflex Inc | Boynton Beach | FL | — | ◇ UNVERIFIED |
| MMMenasco Manufacturing Company | Burbank | CA | — | ◇ UNVERIFIED |
| MMMenasco Mfg CO Ca Division | Burbank | CA | — | ◇ UNVERIFIED |
| MMMenasco Mfg CO (eis Use) | Burbank | CA | — | ◇ UNVERIFIED |
| MRMhi Rj Aviation INC. | Tucson | AZ | — | ◇ UNVERIFIED |
| MDMi Drilling Fluids CO Aviation Dept | Houma | LA | — | ◇ UNVERIFIED |
| MAMikuni American CORP | Torrance | CA | — | ◇ UNVERIFIED |
| MAM&M AeroParts LLC | Burbank | CA | — | ◇ UNVERIFIED |
| MAMojave Air & Space Port | Mojave | CA | — | ◇ UNVERIFIED |
| MAMooney Airplane CO | Kerrville | TX | — | ◇ UNVERIFIED |
| MAMooney Aviation Company | Kerrville | TX | — | ◇ UNVERIFIED |
| MSMra Systems, Incorporated | Baltimore | MD | — | ◇ UNVERIFIED |
| NSNasa Science and Integration Facility | Palmdale | CA | — | ◇ UNVERIFIED |
| NKNas Keywest Fleet Readiness Center Se | Key West | FL | — | ◇ UNVERIFIED |
| NANational Air College International | San Diego | CA | — | ◇ UNVERIFIED |
| NHNational Helicopter CORP | Farmingdale | NY | — | ◇ UNVERIFIED |
 Nextant Aerospace LLC | Richmond Heights | OH | — | ◇ UNVERIFIED |
| NANextgen Aviation Services | Chino | CA | — | ◇ UNVERIFIED |
| NPNie Planes, LLC | Boise | ID | — | ◇ UNVERIFIED |
| NRNordam Repair, Victorville | Victorville | CA | — | ◇ UNVERIFIED |
| NBNorth Boeing Field Georgetown Steamplant | Seattle | WA | — | ◇ UNVERIFIED |
| NMNorthern Maine Aviation, LLC | Lincoln | ME | — | ◇ UNVERIFIED |
| NCNorthrop CORP. | Hawthorne | CA | — | ◇ UNVERIFIED |
| NCNorthrop Corporation | Pico Rivera | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman | Azusa | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman | Clearfield | UT | — | ◇ UNVERIFIED |
| NGNorthrop Grumman CORP | Hawthorne | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman CORP | Lake Charles | LA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman CORP Aircraf | Compton | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman CORP Aircraft Integration Center | Palmdale | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Mojave Hanger 71 | Mojave | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Newbury Park | Newbury Park | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Site 7 | Palmdale | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems | Manhattan Beach | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems CORP | Woodland Hills | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems CORP | Bethpage | NY | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems CORP. | Mojave | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems CORP. | El Segundo | CA | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems Corporation | Bethpage | NY | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems Corporation | Saint Augustine | FL | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems Corporation | Melbourne | FL | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems Corporation - Emerado | Emerado | ND | — | ◇ UNVERIFIED |
| NGNorthrup Grumman | Aurora | CO | — | ◇ UNVERIFIED |
 Nwi Nashville | Nashville | TN | — | ◇ UNVERIFIED |
| NDNys Dmna - Fms #11 | Rochester | NY | — | ◇ UNVERIFIED |
| OAOea Areospace INC | Fairfield | CA | — | ◇ UNVERIFIED |
| OAOmega Aircraft Articles LLC | Elkhorn | WI | — | ◇ UNVERIFIED |
| OEOntic Engineering & Manufactur | North Hollywood | CA | — | ◇ UNVERIFIED |
| OOrizon | Chanute | KS | — | ◇ UNVERIFIED |
