| 2 Excel Aviation LimitedUK.145.01384 | UK.145.01384 | Doncaster | GB |
| 2 Excel Engineering LimitedUK.145.01353 | UK.145.01353 | Alton | GB |
| 21 Aero LimitedUK.145.01885 | UK.145.01885 | Warrington | GB |
| 25 Repair Centre LimitedUK.145.01169 | UK.145.01169 | Chichester | GB |
| 25+ Repair Center Inc d/b/a Leki TechUK.145.50116 | UK.145.50116 | Elma | US |
| 4Repair BVUK.145.01883 | UK.145.01883 | Hoogerheide | NL |
| 630 Aerospace, Inc.UK.145.50219 | UK.145.50219 | Miami Lakes | US |
| A Professional Aviation Services Corp.UK.145.50421 | UK.145.50421 | Miami | US |
| A&P International Services S.A.P.I. de C.V. t/a Aviation Integrated Services GroupUK.145.01558 | UK.145.01558 | Pasadena | US |
| A&P Plus Structures, Inc.UK.145.50874 | UK.145.50874 | Miami Gardens | US |
| A&R Aviation Services, Inc. dba A&R Aviation ServicesUK.145.50094 | UK.145.50094 | Olympia | US |
| A2B Heli (Maintenance) LimitedUK.145.01318 | UK.145.01318 | Redhill | GB |
| AAI Aero IncorporatedUK.145.50593 | UK.145.50593 | Daphne | US |
| AAL LtdUK.145.01519 | UK.145.01519 | Altenrhein | CH |
| AAR Aircraft Component Services International, a Division of AAR International IncUK.145.01480 | UK.145.01480 | Hoofddorp | NL |
| AAR Aircraft Services, Inc. d/b/a AAR Aircraft Services - OklahomaUK.145.50714 | UK.145.50714 | Oklahoma City | US |
| AAR Allen Services, Inc., dba AAR Component Services, WellingtonUK.145.50358 | UK.145.50358 | Wellington | US |
| AAR Component Services - Grand Prairie, Inc.UK.145.50479 | UK.145.50479 | Grand Prairie | US |
| AAR Component Services - Hot Springs, LLCUK.145.50382 | UK.145.50382 | Hot Springs National Park | US |
| AAR Component Services (Thailand) LtdUK.145.01804 | UK.145.01804 | Lincoln | US |
| ABL srlUK.145.01779 | UK.145.01779 | Pomezia | IT |
| Able Aerospace Services IncUK.145.50020 | UK.145.50020 | Mesa | US |
| Above Ground Level Aerospace Corp.UK.145.50482 | UK.145.50482 | Albany | US |
| ABS Jets A.S.UK.145.01870 | UK.145.01870 | Prague | CZ |
| Absolute Aviation Services, LLC dba Absolute Aviation ServicesUK.145.50056 | UK.145.50056 | Cheney | US |