Air Operators (Foreign & Domestic)

Aero California
Air Hong Kong
Air India Limited
Air New Zealand
Air Tran
Alitalia
All Nippon Airways
Atlas Air
Braathens Safe
British Airways
Canadian Airlines
Cathay Pacific
Continental Airlines, Inc
Dragonai
Emery Worldwide 
Empire Airlines
Evergreen Int'l Airlines 
International Airlines
Federal Express
First Air Canada
Gemini Air Cargo
Ghana Airways
Horizon Air
JetCorp
KLM
Lan Chile
Mesaba Aviation, Inc
Midwest Express
North American Airlines
Northwest Airlines 
Omni Air International
Polar Air Cargo
Safair
Saudi Arabian Airlines
SAS - Scandinavian Airlines Systems
SkyJet
Southeast Airlines
Spirit Airlines
Sun Country Airlines
THY - Turkish Airlines Inc.
UPS
Varig

Original Equipment Manufacturers (OEMs):

CMC Electronics
Collins - Air Transport Division
Honeywell - Air Transport Systems 
Spirent Systems Wichita
Teledyne Controls
ACSS/L3 Com/Thales

Lease/Finance Companies:

Credit Lyonnais/PK Air France
GECAS
International Aircraft Investors
ITOCHU
ILFC (International Lease Finance Corp.)
 

Modification Centers:

Aeronavali - Venice
Boeing Commercial Airplane Group
TIMCO
Tramco/BF Goodrich