- 3 Gen Avion Trading LLC
- A.G.E. SRL
- A.W. Developments
- AAR Aircraft Services – Windsor ULC
- Abu Dhabi Aircraft Technologies
- Abu Dhabi Amiri Flight
- Acropolis Aviation Ltd.
- ACTS Aero Technical Support & Services
- Advanced Ground Systems Engineering LLC
- Advantage Airline Parts Inc.
- Aegean Airlines
- AEP Compressed Air Technologies
- Aer Lingus
- Aero Air
- Aero Assets LLC
- Aero Engine Centre
- Aero & Military Products Pty Ltd.
- Aerocontractors Company of Nigeria Ltd.
- Aeroeagle Resources Asia Pte Ltd.
- Aeroflot Russian Airlines
- Aerolineas Argentinas
- Aerolink International Ltd.
- Aerolitoral S.A De C.V.
- Aeromexico
- Aerorich Pte Ltd.
- Aerosafe Products
- Aerosvit-Ukranian Airlines
- Aerotech
- Aerotechnik Anhalt
- Aerovias
- AeroWest Mfg Corp
- Agusta Westland
- AI Systems International Corp
- Air Algerie
- Air Arabia
- Air Astana
- Air Atlanta Aero Engineering Ltd
- Air Atlantique
- Air Austral
- Air Berlin
- Air Bridge Carriers Ltd.
- Air Canada
- Air Caraibes
- Air Corsica
- Air Costa
- Air Deccan
- Air Europa
- Air France
- Air Hanson
- Air India
- Air Italy S.p.A.
- Air Jamaica
- Air Luxor (now Hifly)
- Air Madrid
- Air Maintenance Estonia AS
- Air New Zealand
- Air Nigeria
- Air One
- Air Pacific Limited (Fiji Airways)
- Air Pacific Ltd.
- Air Parts Ltd.
- Air Philippines
- Air Transat
- Air Transport International
- Air UK Engineering
- Air Works India Engineering Private Ltd.
- AirAsia
- Airblue Limited
- Airbus Defence and Space
- Airlogic Ltd.
- Airnorth Engineering
- Airphil Express (formerly Air Philippines)
- Airwork Ltd
- AJ-USA
- AJ Walter Aviation
- Aker-Stord (Norway)
- Al Fahim Trading L.L.C.
- Al Jaber Aviation
- ALA Corporation UK
- Alenia Aeronautica (Italy)
- Alitalia
- All Nippon Airways
- All Nippon Airways Trading Co. Ltd.
- Alstom Gas Turbines
- AMAC Aerospace
- American Airlines
- American General Supplies
- Amiri Flight
- AmSafe Bridport
- Angola Airlines
- Ansett Aircraft Spares & Services
- Anson Tools & Trading Associated
- Apcol Lda
- API Asia Pacific Inc.
- APSI
- Ariana Afghan Airlines
- Arkia Israeli Airlines Ltd.
- Asia Pacific Aircraft Storage Pty Ltd.
- ASL Airlines Ireland
- ATC Lasham
- Atlantic Airways
- Atlantic Aviation Group
- Atlas Air
- Atlas Jet (Turkey)
- ATS Team – Havacilik Teknik A.S.
- Austral Lineas Areas
- Australian High Commission
- Austrian Airforce
- Austrian Airlines
- Aviahelp Group JSC
- Aviall
- Avianca
- Aviapool
- Aviation Beauport Ltd.
- Aviation Display
- Aviation Spares
- Avient Ltd.
- Aviquipo Holland B.V.
- Avtrade
- Aylward Engineering & Pneumatics Ltd.
- Azul Trip
- Babcock Aerospace
- BAE Chester
- BAE Dunsfold
- BAE Manchester
- BAE Systems
- BAE Systems Surface Ships
- BAE Warton
- BAE Yorkshire
- BAI Inc.
- Bamboo Airways Company Limited
- Bangkok Airways
- Bangladesh Navy
- Bartender Trading LLC
- BASCO
- Belgian Airforce
- Beta Glass Plc.
- BH Air (Bulgaria)
- Big Sky Aviation Inc.
- Bimen Bangladesh Airlines
- Bjorge/EGT
- Blackpool Transport Services Ltd
- Blue Dart Aviation Limited
- Blue Waves
- BMI Regional
- BMW – Rolls Royce
- BNFL (Magnox Generation Dungeness ‘A’ Power Station)
- BNFL (Sellafield)
- Boeing Global Japan
- Boeing (US Army)
- BP (Cruden Bay)
- Brammer
- Brazilian Navy
- Bristow Helicopters Ltd
- Britannia Airways
- Britannia Airways (Sweden)
- Brite Air
- British Aerospace
- British Airways
- British Airways (Glasgow)
- British Airways (Heathrow Airport)
- British Hovercraft
- British International Industries Ltd.
- British Midland International
- Brunei Shell
- Buck & Hickman
- Canadian Airforce
- Canadian Armed Forces
- CanJet Airlines
- Cargolux
- Caribbean Airlines
- Carnival Airlines (USA)
- Cbol Corporation
- CCM Airlines
- Cenco Inc.
- Certified Components Group
- CFM International
- Charles Kendall Freight
- CHC Helicopter
- CHC Ireland Ltd.
- China Airlines
- China Southern Airlines
- Chip-Tech Ltd.
- CNS Aviation Inc.
- Cobra Instalaciones y Servicios S.A.
- Comair Ltd.
- Compass Airlines
- Connex South Eastern
- ConocoPhillips UK Ltd.
- ContactServe (Pty) Ltd.
- Continental Airlines
- Copa Airlines Panama
- Corendon Airlines
- CPG Logistics Ltd.
- Craig Tools International Ltd.
- Crestwood Technology Group
- Cromwell London
- Cullum Detuners Ltd.
- Custom Fluid Power Ltd.
- Cyprus Airways
- Czech Airlines
- DAeCO Ltd.
- Daimler Chrysler
- Dallas Aviation Inc.
- Danish Air Force
- Dasic International
- DB Schenker Aeroparts
- DC Aviation GmbH
- Deeside College
- Defence Support international Ltd.
- Delta Air Transport
- Delva S.r.l.
- Derek Lane & Co. Ltd.
- Derichebourg Atis Aeronautique
- DHL Air Ltd.
- DHL Aviation EEMEA B.S.C.
- Direct Rail
- DLA Distribution
- Dow Aero Logistics LLC
- Dresser Rand Co. (USA)
- Dresser Rand (UK) Ltd.
- Dubai Air Wing
- Dutch Royal Air Force
- Dutch Royal Navy
- EAGT Taiwan
- East Wonder International Inc.
- Eastern Generation
- EFK Aviation Technology Ltd.
- EgyptAir
- El Al Israel Airlines
- Embraer Aircraft Maintenance Services Inc.
- Embraer Brasileira
- Emcor Group (UK) PLC
- Emerald Airways
- Emirates Airline
- Emirates Engineering Centre
- EMTC Aviation Services GmbH
- Engine Alliance (GP7200 & GE)
- Enter Air Services
- Enterprise Oil
- Ethiopian Airlines
- Euralair Industries
- Euro-Falke GmbH
- Eurocypria Airlines
- Europe Aviation
- European Air Transport
- European Gas Turbines
- Europrop International (EPI)
- Eurowings
- EVA Air
- Evergreen Aviation tech Corp. Taiwan
- ExecuJet Aviation Group
- ExpressJet Airlines
- F.B.S. Ltd.
- F.R. Aviation
- Falcon Aviation Services
- Far East Aviation Equipment Ltd.
- FB Heliservices Ltd.
- FedEx
- FEL Avionics Ltd
- Felix Airways
- Ferguson Enterprises Inc.
- FFK Fon Finansal Kiralama
- FFV Aerotech
- Field Aviation
- Field International Ltd
- FL Technics
- FLS Aerospace
- FLS Aerospace (Ireland)
- flydubai
- FMV Sweden
- Fonseca Matos & Ferreira Lda (Portuguese Air)
- Forniture Industriali SRL
- FPM Technology
- Frontier Airlines Inc.
- Froude Consine Ltd.
- FSL Aerospace Ltd
- Fuji Dream Airlines
- Futura Internac (Mallorca)
- G O T Ltd
- GAMCO – UAE
- Garuda Indonesia
- GCAM Maintenance
- GDC Middle East
- GE Aircraft Engine Services Ltd
- GE Aviation
- GE Aviation USA
- GE Celma LTDA
- GE Engine Services International Inc.
- GE Engine Services Malaysia
- GE Greenwich Caledonian
- GE Pacific Pte Ltd.
- GE Peebles Test Facility
- GE Structured Services
- Germania Technik
- Global Airtech
- Globalia Mantenimiento Aeronautico
- GOL Transportes Aeroes S.A.
- Goldtec Technologies
- GoT2echnics
- Gowrings Continental
- Greenwich Caledonian
- Grove Park Maintenance (London)
- GSE Services Pty Ltd.
- GT Engine Services Ltd.
- Gulf Air
- Gulf Helicopters Company
- Hansa-Flex AG
- Hapag Lloyd
- Harmony Aerospace France
- Helvetic Airways
- Herbert Michalk export & import
- Hi Fly
- Hispano-Lusitana de Aviación, S.L.
- HNA Aviation
- Homac Aviation Group
- Hong Kong Aircraft Engineering Company Ltd.
- Hong Kong Smile Face Air Technology Co., Ltd.
- Honos
- Hunting Aviation
- Hydro Systems KG
- I.C.S.
- I.E.M.A. (Portugal)
- IAI Aircraft Divison
- Iberia Lineas Aereas De Espana
- Iberworld Airlines (Mallorca)
- Iddon Hydraulic Ltd.
- IHI Heavy Industries
- IMP Aerospace
- IMP Aerospace & Defence
- Indian Air Force
- Indian Navy
- Inflite Engineering Services Ltd
- Inter Airlines
- Inter Appro
- Inter-Nett Plain Sailing Cleaning Services
- Interaero Inc.
- Interjet
- International Aircraft Associates Inc.
- IQA Industrias Quimicas
- Iris Trade
- Island Aviation Services Ltd.
- Isle of Scilly Skybus Ltd.
- ISM Espana SL
- Israel Aerospace Industries
- Israir Airlines and Tourism Ltd.
- ISS GmbH
- Italian Army
- iTech Consultants
- ITP MRO
- ITP (Planta de Ajalvir)
- Jacobs
- JAL Aeroparts S.A.S.
- JAL (Japan)
- Jalux Europe Ltd.
- Japan Airlines Co.
- Japan Transocean Air
- JEA
- Jeju Air
- Jet Airways (India) Ltd.
- Jet Blue
- Jet2.com
- Jetairfly
- Jetstar
- JIT Aviation
- JIT Aviation USA
- JorAMCo
- Jordan Aviation
- JSC Aurora Airlines
- JSC Orenair
- Junyi Technology Development Ltd.
- JVYS
- Kellogg Brown & Root Ltd.
- Kenya Airways
- Keyford Precision Engineering (Frome) Ltd
- Kingfisher Airlines
- KLM
- KLM UK Engineering
- Korean Air
- Kunming Airlines
- Kuwait Airways
- LAM Mozambique Airlines
- Lan Airlines S.A.
- Langa Industrial S.A.
- Lao Airlines
- Latam Airlines Group
- Lauda Air
- Leki Aviation
- Leonardo MW Ltd.
- Libyan Airlines
- Lincoln Turbine Service Ltd.
- Lintech
- LLC NW Technic
- London Underground (Hammersmith)
- London Underground (Jubilee Line)
- London Underground (Stonebridge Park)
- LOT Polish Airlines
- Lufthansa Cityline GMBH
- Lufthansa (Frankfurt)
- Lufthansa (Stuttgart)
- Lufthansa Technik Airmotive Ireland
- Lufthansa Technik Budapest
- Lufthansa Technik Philippines
- Lufthansa Technik Sofia
- Luxair
- M3 Technology
- MacLean Electrical
- MAE Aircraft Management
- Magnox Electric Ltd.
- Malaysia Airlines Berhad
- Malaysian Navy
- Mandarin Airlines
- MAOS Aviation LLC
- Mazoon International (Oman)
- Mekong Aviation
- Merpati Nusantara Airlines
- MESA (Portugal)
- Mexicana Airlines
- MIAT Mongolian Airlines
- Middle East Airlines AirLiban (MEA)
- Military & Aviation Spares Pty Ltd.
- Milspec Services Pty Ltd.
- Ministry of Defence
- Ministry of Interior (State of Bahrain)
- MNG Airlines Turkey
- Monarch Airlines
- Monks & Crane Ltd.
- Montenegro Airlines
- MST Ltd. (Azerbaijan)
- MTU Maintenance (Berlin)
- Munasib Sanaye Techizat (MST)
- Murakami Jitsugyo Inc.
- myTECHNIC
- MyTravel
- N.V. Sabena Technics BRU S.A.
- Naganari Corporation (Malaysia)
- Nano-Tech Aviation Ltd.
- National Air Service (NAS)
- Naval Air Warfare Centre
- Nayak
- NedAero Services B.V.
- Nediar S.A.S.
- New Zealand Defence Force
- Newbegin Enterprises Inc.
- NHE Aero Trading
- Niki Luftfahrt GmbH
- Nippon Cargo Airlines
- Norbord
- Nord-Technik
- Nord Wind LLC
- Nordic MRO
- North West Airlines (Snecma)
- North West Airlines (Snecma) Mineapolis
- North West Airlines (Snecma) Tampa
- Northern Wings Repair Inc.
- Northrop Grumman Integrated
- Norwegian Rail
- Nova Airlines
- Oceanair Linhas Aereas
- OJSC Saratov Airlines
- OMV (Pakistan) Exploration Gesellschaft
- Onur Air
- Owl Aerospace
- P & W America
- Pacific Dynamics (Defcon Technologies)
- Pakistan International Airways
- Pamborong Maju
- Pegasus Hava
- Pequipmar
- Pilot Aircraft Corp.
- Pinnacle Airlines
- Plus Ultra Lineas Aereas
- Portugese Air Force
- Power Ring Technology (Hong Kong) Ltd.
- Prime Aerospace PTE Ltd.
- Primo Instrument Inc.
- PSA Airlines
- PT. Batam Teknik
- PT. Indonesia AirAsia
- PX Group
- Qantas Airways
- Qatar Airways
- Qatar Petroleum Development Co. Ltd.
- Qihang International Holding Limited
- Qualitair
- R.A.N. Australia
- R-Contrade Trading & Services
- RAAF
- RAF
- RAF Benson
- Rak Airways
- Ramp Industries Ltd.
- Regional Compagnie Aerienne Europeen
- Regional Railways
- Regional Railways (Leeds)
- Regional Railways (Norwich)
- Repaircraft plc.
- Republic Airlines Inc.
- Rhinestahl Corporation
- Ri. Technologie Industriali Srl.
- RNLAF
- Rodamientos Vigo S.A.
- Rolls Royce (Derby,England)
- Rolls Royce (North America)
- Rossiya Airlines
- Rossiya Russian Airlines
- Rotodyne SRL
- Royal Air Force of Oman
- Royal Air Maroc
- Royal Brunei Airlines
- Royal Jordanian
- Royal Malaysian Air Force
- Royal Navy (Prestwick)
- Royal Navy (UK)
- Royal Netherlands Navy
- Royal Norwegian Air Force
- RSD Supplies and Services
- Ryanair
- S7 Engineering
- SAA Technical
- Saab Aerotech
- Sabena
- Safair (Pty) Ltd.
- Safi Airways
- Safran
- Saga Airlines
- Sage Parts GSE Ltd.
- Sahara Airlines
- Sakhalin Energy Investment Company Ltd.
- Saudi Arabian Airlines
- Saudi Aramco
- Saudia Aerospace Engineering Industries
- Saudia Airlines
- Schreiner Airways
- Schreiner & Co. (AD-S & Co. b.v.)
- Scop Nea
- Scott Aerospace Ltd.
- Senegal Airlines
- Sepang Aircraft Engineering
- Serck Intertruck
- SG Equipment Ltd.
- Shandong Airlines
- Shannon Aerospace
- Shannonside Aviation Ltd.
- Shenyang Southern Airlines
- Shenzhen Airlines
- SIA Engineering Company
- Sibir Technics LLC
- Sichuan Snecma China
- Siemens
- Silico Systems LLC.
- Simex Defence
- Singapore Airlines
- Sky Aviation (Nigeria) Ltd.
- Skymark Airlines Inc. (Japan)
- Slovak Airlines
- Smartwings
- Snecma America Engine Services
- Snecma Moteurs
- Snecma Services (CFMI Factory)
- Snecma Services France
- Snecma Services North America
- Snecma Services (Transavia)
- Solair Group
- Solinair
- South African Airways
- South West Trains (Fratton Traincare)
- South West Trains (Salisbury)
- Southern Air
- Spanish Air Force
- Sparecraft Ltd.
- Specialist Technologies Ltd.
- SR Technics Ireland Ltd.
- Sri Lanka Air Force
- ST Aerospace (Singapore)
- ST Aviation Services Co. Pte Ltd.
- Standard Aero Ltd.
- StandardAero
- Strategic Airlines (Australia)
- Sun Country Airlines
- SunExpress
- Sunstate Airlines
- Sunwing Airlines Inc.
- Swiftair S.A.
- Taikoo (Shandong) Aircraft Engineering Co Ltd
- Tam Linhas Aereas SA
- TAP M&E Brazil
- TAP Portugal
- Tarmac Aerosave
- Tarmac Aragon S.L.
- Tata SIA Airlines Ltd.
- TDA
- T&E Co. Ltd. (Japan)
- Tec4Jets
- Thai AirAsia X
- Thai Airways
- Thai Aviation Services
- Total E&P Nederland B.V.
- Trafficair
- Transaero Airlines
- Transaero Engineering Ireland Ltd.
- TransAsia Airways
- Transavia
- Trident Aerospace Ltd.
- TSS Aerospace
- TUI Travel
- Tunisair
- Turbine Efficiency Ltd.
- Turkish Air Force
- Turkish Airlines
- Turkish Technic
- T’Way Air
- UAE
- United Airlines
- United Arab Emirates Air Force
- United Corporation Ltd.
- United Enterprise Group Ltd.
- US Airways
- US Army
- USAF (Tinker AFB)
- Uzbekistan Airways
- Varig Airlines (Brasil)
- Vector Aerospace
- Vernair
- Vietnam Airlines
- Virgin Atlantic Airways
- VivaAerobus
- Volga-Dnepr Technics GmbH
- Vortex Aviation Ireland Ltd.
- VT Aerospace
- VT Shipbuilding International
- Vulcan Operating Company
- Wencor West Inc.
- West Coast Train Care
- West Jet (Calgary Canada)
- Westland Helicopters
- Westland Transmission
- Westley Aircraft
- Wideroe
- Wizz Air Hungary KFT
- WM Airline Services
- Wolseley Industrial Group
- Wood Group
- Wyle Laboratories
- Y-Tech Services, Inc.
- Yardimcilar Otomotiv
- Yemen Airways (Yemenia)