SPECIAL PROCESS

Process                            Approval by

Ultrasonic test                Boeing Co. Airbus, Rolls-Royce

Penetrate test                  Airbus, Goodrich

Magnetic test                   Goodrich

Heat treatment for Titanium forging:     Boeing Co. Airbus, Rolls-Royce NADCAP

Heat treatment for Steel forging:      Boeing Co., BF Goodrich, TRW-Lucas,                     

                                                     Messier-Dowty,  Siemens, Toshiba

Heat treatment for Al-alloy forging:  TRW-Lucas, BF Goodrich