. . . EXHIBIT 21.1 SUBSIDIARIES OF OFFSHORE LOGISTICS, INC. Percentage Place of of Voting Company Incorporation Stock Owned - --------------------------------------------------- ------------- ----------- Aeroleo Taxi Aereo S/A Brazil 20% Air Logistics of Alaska, Inc. Alaska 100% Air Logistics, L.L.C. Louisiana 100% Aircopter Maintenance International, Inc. Panama 49% Airlog International, Inc. Panama 100% Airlog International, Ltd. Delaware 100% Airlog Part Sales, Inc. Louisiana 100% Brilog Leasing Limited Cayman Islands 100% Bristow Aviation Holdings Limited England 49% Bristow Caribbean Ltd. Trinidad/Tobago 40% * Bristow Helicopter Group Limited England 49% Bristow Helicopters Australia Pty. Ltd. Australia 49% * Bristow Helicopters International Limited England 49% Bristow Helicopters Limited England 49% Bristow Helicopters Nigeria Limited Nigeria 40% * Bristow International Limited England 100% Bristow Technical Services Limited England 49% FB Heliservices Limited England 50% * FBL Limited England 50% * FBS Limited England 50% * Grasso Corporation Delaware 100% Grasso Production Management Texas 100% Guaranty Financial International, N.A. Netherlands 49% Antilles Heliservicio Campeche S.A. de C.V. Mexico 49% Hemisco Helicopters International, Inc. Panama 49% Medic Systems, Inc. Delaware 100% Norsk Helikopter AS Norway 49% * Offshore Logistics International, Inc. Panama 100% Pan African Airlines Nigeria Ltd. Nigeria 40% Petroleum Air Services Egypt 25% Pueblo Airmotive, Inc. Arizona 100% * percentage owned by Bristow Helicopters Limited