3407
WAS on the centerline. They were just outside the outer marker. The above Union "Safety Alert " has nothing to do with this accident.
Here is what a source at Bombardier has revealed about this accident:
-This accident was a garden-variety stall-spin accident that had nothing to do with airframe icing.
-The aircraft was on autopilot approaching Rwy 23 at KBUF.
-Flap 5 was selected at 135 kts. (The initial flaps are available at 200kts. Gear can be selected at 200 kts).
-Approaching the FAF, flap 15 and landing gear were selected and speed quickly decayed to 105 kts. (there is no autothrust system)
-Due to the low speed in this configuration, the aircraft pitch angle now became abnormally high at 6 degrees n/u
-Selection of airframe de-ice to "on" programs low speed warnings, stick-shaker to be moved up by approx 20 kts.
-At the approximate interval when gear was selected but not yet down, the stall warning and stick shaker and stick pusher were activated. (this disconnects the autopilot)
-Due to the low speed and configuration, the longitudinal trim had run to a large amount of nose-up trim.
-The aircraft rolled to the left and pitched down significantly.
-The pilot applied full power (approximately 10,000 hp) and pulled up.
-The nose pitched up to 31 degrees (possibly due to the abnormal amount of nose-up trim) and the acft rolled to the right.
-The aircraft entered a secondary stall and began to spin.