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The pylon side of the disconnect valve was found jammed in the open position. A fire damage pattern originated from this valve.
Examination revealed the No. 1 engine emergency fuel shutoff valve located behind the fire wall at the top of the engine pylon was in the off position.
The No. 1 engine fire warning system was found inoperative. Investigation showed that with separation of the forward portion of the engine nacelle doors the fire warning loop was disputed. The loop at the rear or hot section of the engine was intact but a connector was torn out with the cowling.
Examination of the fire extinguisher system showed normal operating capability. The No 4 extinguisher container was empty. Containers Nos. 2, 3, and 4 were full.
1.114 Survival Aspects
Cabin crew personnel reported that during the emergency the passengers were calm. Emergency landing instructions were issued. Each passenger was given a pillow and blanket while seat belts were tightened and checked by a cabin attendant. After the landing all exits on the right side were opened. Passenger evacuation was made using slide chutes from the right forward and aft service doors.
Emergency rescue and fire equipment of the Oakland International Airport, having been alerteLi, converged on the aircraft from strategic positions beside the runway. The No. 1 engine was washed down to ensre no fire threat existed and dry chemical was put on the brakes which were extremer hot from heavy braking
