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zakthor zakthor is online now
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Join Date: Jun 2010
Location: beaux arts, wa
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Quote:
Originally Posted by Cajundaddy View Post
Yes. When an aircraft is very close to stall speed, exasperated by being nose up, a left turn reduces airflow slightly over the left wing and increases airflow over the right wing inducing a L wing drop stall. Attempting to lift the wing by applying aileron makes the problem worse. It is entirely possible that they suffered a bird strike or other mechanical problem causing their approach to become unstabilized at a critical moment. They were too low to recover once the left wing dropped.

Monday morning armchair quarterback debrief- The cockpit alarms were probably screaming a stall warning. If they had gone to full power and pushed over the nose to stabilize the aircraft and go around this might have been avoided. It was the only trick left in the bag in their situation.

More in-depth detail on a wing drop stall can be found here:
https://www.aviation.govt.nz/licensing-and-certification/pilots/flight-training/flight-instructor-guide/wing-drop-stalling/
Thanks for the explanation and the link. Is impressive it is a well documented thing.

I looked up the plane, it is much bigger than I thought it was and fooled my eye. I thought it was a little mountain plane but its huge and needs 1000 meters to land.

I've landed at pokhara and also at lukla before it was paved. The plane into Lukla was a turbine pilatus which has big deep wings for its size. Could feel its excess of lift even when landing at 9k feet.

This is a super sad thing.
Old 01-17-2023, 02:20 PM
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