| 16
August 1987 - Northwest
255 |
Flight 255 departed Saginaw for a flight to Detroit, Phoenix and Santa
Ana, arriving at Detroit at 19.42h. Pushback for departure was accomplished
at 20.34 and the crew received taxi instructions for runway 3C. During
the taxi out, the captain missed the turnoff at taxiway C and new taxi
instructions were given. At 20.42 Flight 255 was told to taxi into position
on runway 3C and hold, followed by a takeoff clearance two minutes later.
Shortly after rotation the stick shaker (stall warning) activated. The
aircraft rolled left and right and the left wing struck a light pole
in a car rental lot. Flight 255 continued to roll to the left, continued
across the car lot, struck a light pole in a second rental car lot and
struck the side wall of the roof in a 90deg left wing down attitude.
The plane was still rolling to the left when it impacted the ground
on a road outside the airport boundary and continued to slide along
the road, striking a railroad embankment, disintegrating and bursting
into flames.
PROBABLE CAUSE: "The flight crew's failure to use the taxi checklist
to ensure that the flaps and slats were extended for take-off. Contributing
the the accident was the absence of electrical power to the airplane
take-off warning system which thus did not warn the flight crew that
the airplane was not configured properly for take-off. The reason for
the absence of electrical power could not be determined."
[Takeoff]
[Stickshaker starts and continues through end of recording]
AWS: Beep Beep Beep Beep......Stall
AWS: Beep Beep Beep Beep Beep Beep......Stall
AWS: Beep Beep Beep Beep......Stall
CA: Oh, ****
AWS: Beep Beep Beep Beep......Stall
[Sound of wing hitting light post]
[Sound of impact]
[End of Recording]
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