| OAOrbit Aviation | Long Beach | CA | — | ◇ UNVERIFIED |
| OOrizon | Fenton | MO | — | ◇ UNVERIFIED |
| OAOtto Aviation Group LLC | Irvine | CA | — | ◇ UNVERIFIED |
| PCPacific Continental Engines | Diamond Bar | CA | — | ◇ UNVERIFIED |
| PCPacific Continental Engines, INC. | Pacoima | CA | — | ◇ UNVERIFIED |
| PCPacific Contours Corporation | Anaheim | CA | — | ◇ UNVERIFIED |
| PCPacific Contours San Diego Division | Spring Valley | CA | — | ◇ UNVERIFIED |
| PSPacific Scientific | Dallas | TX | — | ◇ UNVERIFIED |
| PSPacific Scientific Htl/kin-tech Div | Duarte | CA | — | ◇ UNVERIFIED |
| PBPalm Beach Aircraft Services INC | Lantana | FL | — | ◇ UNVERIFIED |
| PAPanasonic Avionics Corporation | Irvine | CA | — | ◇ UNVERIFIED |
| PAPanasonic Avionics Corporation | Lake Forest | CA | — | ◇ UNVERIFIED |
| PMParadigm Manchester INC | Manchester | CT | — | ◇ UNVERIFIED |
| PPParadigm Precision | Manchester | CT | — | ◇ UNVERIFIED |
| PPParadigm Precision | Manchester | CT | — | ◇ UNVERIFIED |
| PPParadigm Precision INC - East Berlin | East Berlin | CT | — | ◇ UNVERIFIED |
| PPParadigm Precision INC - Tempe | Tempe | AZ | — | ◇ UNVERIFIED |
| PHParker Hannifin Corp, Control Sys Div | Irvine | CA | — | ◇ UNVERIFIED |
| PAPauquette Associates, LLC | Corona | CA | — | ◇ UNVERIFIED |
| PAPcc Airfoils LLC | Cleveland | OH | — | ◇ UNVERIFIED |
| PAPcc Airfoils LLC | Sanford | NC | — | ◇ UNVERIFIED |
| PIPerkinelmer Incorporated | Warwick | RI | — | ◇ UNVERIFIED |
| PCPhillip C. Friedman | Long Beach | CA | — | ◇ UNVERIFIED |
| PCPhillip C. Friedman | Long Beach | CA | — | ◇ UNVERIFIED |
| PPPhlogiston Products INC | Gaston | OR | — | ◇ UNVERIFIED |
 Piedmont Propulsion Systems LLC | Winston Salem | NC | — | ◇ UNVERIFIED |
| PFPiney Flats Technologies INC | Piney Flats | TN | — | ◇ UNVERIFIED |
| PAPinnacle Aircraft Engines LLC | Silverhill | AL | — | ◇ UNVERIFIED |
| PAPlatinum Aerostructures | Nevada | MO | — | ◇ UNVERIFIED |
| PCPolar Corporation | New Britain | CT | — | ◇ UNVERIFIED |
| PAPratt and Whitney Aircraft Engines | North Haven | CT | — | ◇ UNVERIFIED |
| PWPratt & Whitney | Middletown | CT | — | ◇ UNVERIFIED |
| PWPratt & Whitney Cfb2 | Columbus | GA | — | ◇ UNVERIFIED |
| PWPratt & Whitney Composites INC | San Diego | CA | — | ◇ UNVERIFIED |
| PWPratt & Whitney Div Utc (willgoos Lab) | East Hartford | CT | — | ◇ UNVERIFIED |
| PWPratt & Whitney Engine - Clarksburg Service Center | Bridgeport | WV | — | ◇ UNVERIFIED |
| PWPratt & Whitney Engine Services INC Airfoils & Coatings | Grand Prairie | TX | — | ◇ UNVERIFIED |
| PWPratt & Whitney Engine Services INC Digt | Arlington | TX | — | ◇ UNVERIFIED |
| PFPrecise Flight INC | Bend | OR | — | ◇ UNVERIFIED |
| PMPrecise Machine | Fort Worth | TX | — | ◇ UNVERIFIED |
| PAPrecision Aero Services INC | Bolivar | MO | — | ◇ UNVERIFIED |
| PAPrecision Airparts Support Services, Inc. | Green Cove Springs | FL | — | ◇ UNVERIFIED |
| PEPrecision Engine Control Corporation | San Diego | CA | — | ◇ UNVERIFIED |
| PEPrecision Engines LLC | Everett | WA | — | ◇ UNVERIFIED |
| PMPrecision Metals Inc | Wichita | KS | — | ◇ UNVERIFIED |
| PPPrecision Plating INC | Jamaica | NY | — | ◇ UNVERIFIED |
| PSPrecision Specialties INC | La Follette | TN | — | ◇ UNVERIFIED |
| PAPremier Air Center INC Dba West Star Aviation INC | East Alton | IL | — | ◇ UNVERIFIED |
| PAPremier Aviation Services | Vandalia | OH | — | ◇ UNVERIFIED |
| PTPremier Turbines | Neosho | MO | — | ◇ UNVERIFIED |
