PORTLAND, OR, USA
N125DL
Boeing 767-332
While the Boeing 767 was taxiing for departure, the crew of another aircraft reported that there was smoke and flames coming from the Boeing 767 APU exhaust. The crew of the Boeing 767 shut down the APU and began coordinating with dispatch for a return to the gate. The crew was then directed by the tower to hold their position and to shut down their engines. Soon thereafter, the tower advised the crew that the Fire Marshall had called for the aircraft to be evacuated because there was still smoke coming from the APU exhaust. The aircraft was evacuated using the evacuation slides at the door exits. One passenger received serious injuries during the evacuation. An inspection of the APU showed that the fuel control unit and the gearbox shutoff valve needed to be replaced. Once those units were replaced, the APU was test run with no further discrepancies noted.
On February 20, 1996, approximately 0715 Pacific standard time (PST), a Boeing 767-332, N125DL, experienced an APU exhaust fire at Portland International Airport, Portland, Oregon. None of the flight or cabin crew were injured, but three of the 135 passengers received minor injuries, and one sustained a serious injury. The scheduled Part 121 domestic passenger flight had come to a stop while taxiing for takeoff in VFR conditions. The intended destination was Los Angeles International Airport. According to Delta Air Lines, the crew of another aircraft reported flames and smoke coming from the APU exhaust of the 767 while it was taxiing for takeoff. The 767 crew shut the APU down, and began coordination with their dispatch for returning to the gate. They were then directed by Portland Tower to hold position and shut down the aircraft's engines. Soon thereafter, Portland Tower advised the crew that the Fire Marshall had said to evacuate the aircraft because there was still smoke coming out of the exhaust. The flight crew then activated the APU fire bottle and initiated the evacuation, which was carried out via the evacuation slides at the door exits. According to the cabin crew, although some passengers were hesitant about jumping onto the slides, the evacuation proceeded in a calm and orderly manner. One passenger sustained an ankle fracture during the evacuation process. After the accident, the aircraft was inspected for smoke and/or fire damage to the structure, and none was found. The aircraft was then ferried to Los Angeles International Airport, where the APU was removed and sent to Delta's APU shop in Atlanta for inspection. As a result of that inspection, during which the engine "...torched on start," it was determined that both the fuel control unit and the gearbox shutoff valve needed to be replaced. Once those units had been replaced, the APU was test run with no further discrepancies.
the passenger's unsuccessful (improper) evacuation of the aircraft. The malfunctioning APU was a related factor in that it torched and produced smoke, due to a faulty fuel control unit and/or gearbox shutoff valve, thereby prompting an emergency evacuation of the aircraft.
Source: NTSB Aviation Accident Database
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