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Incident: Caspian MD83 and Qatar A35K near Isfahan on Apr 12th 2021, MD83 autopilot malfunction triggers A35K stall warning
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the first officer goes to full power and tilts the nose up so much a stall warning erupts in the cockpit. there s mayhem in the cabin. i just remember hearing people crying and screaming and i was terrified. mercedes mother and father help prepare her for the worst. through all of that chaos i remember hearing my mom s voice, her voice calmed me down because she was actually praying. i was holding on to my dad s hand at the same time [siren sound] 12 seconds after the warning alarm goes off, the sound of splintering trees shatters the silence on a mountainside at 8900 feet. trees impale the jet s hull as 17,000 pounds of fuel explode on impact. it was just the loudest scariest sound i d ever heard.
full power and tilts the nose up so much a stall warning erupts in the cockpit. there s mayhem in the cabin. i just remember hearing people crying and screaming and i was terrified. mercedes mother and father help prepare her for the worst. through all of that chaos i remember hearing my mom s voice, her voice calmed me down because she was actually praying. i was holding on to my dad s hand at the same time. [ siren sound ]. pull up. 12 seconds after the warning alarm goes off, the sound of splintering trees shatters the silence on a mountainside at 8900 feet. trees impale the jet s hull as 17,000 pounds of fuel explode on impact. it was just the loudest scariest sound i d ever heard. the destroyed jet s wreckage spills over the top of a ridge.
because they had heard it intermittently before. they didn t know if it was valid or not and decided to disregard it but we ll never know. they never discussed it. the official french investigative report states that a phenomenon called the startle effect may have played a role. it s similar to walking into a room that s dark and somebody jumping out and saying boo, it s that instantaneous scare, if you will, okay, the auto pilot is off. why is it off? do i need to do and you have to process this information in a compressed timeline. human beings, when they are very, very, very focused on one task, things will drop out. oral inputs are one of the first to go. so this is consistent with this buy l pilot not hearing the stall warning. prior to the crash of 447, airbus and air france recognized
those inputs were massive both in magnitude and in duration. the airplane is going to react more violently than at lower altitude or with the automation. the stability is decreasing, they are approaching a stall. the stall warning sounds twice in the cockpit. stall, stall. the air speed indications have been invalid for less than 30 seconds and now they are coming back online. but in that time, the flight has destabilized and the aircraft is rapidly climbing at 7,000 feet per minute. things get confusing quickly because you look at the air speed i have, but yeah, you have air speed but you have no left. air flow over the wing is ultimately critical for generating lift and supporting the weight of the airplane. so you can pitch the nose of the airplane up but the airplane will fall out of the sky because the wings are incapable of
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