King Air 350 down in Addison, TX
07-04-2019, 08:39 AM
#31
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Originally Posted by JamesNoBrakes
As you get more high performance, away from pistons, you get big massive propellers that can move a lot of air and move the airplane faster. It's a double-edged sword. It means when you have an engine failure, if it doesn't feather, it affects control significantly more, as in having a great big drag source. These will slow down fast, compounded by not pushing the nose down. Keeping one of these in a climb attitude and with an unfeathered failed engine is going to likely Vmc roll it every time. It's on the before takeoff checklist to feather the engines on the ground and bring them out with the manual feather to make sure this is possible in the air and the first cockpit item besides control for an engine failure is to verify that it's feathered and manually feather if it hasn't. You can't screw around with that in these planes, they slow down quickly. It's rare for the autofeather to fail, but it has happened.
Spot on that twin turboprops are susceptible to Vmc. In addition to the drag created by a large unfeathered prop, you also have a very powerful motor at full power on the other side. It can easily get out of hand, and more quickly than a piston twin. IMO survival in turboprops requires that you plan for, expect, and mentally rehearse the engine failure prior to each T/O.
Last edited by rickair7777; 07-04-2019 at 08:52 AM.
07-04-2019, 09:25 AM
#32
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This YouTube poster does frequent videos on aircraft accidents, according to him the landing gear was down at the time of the crash. If he's correct I had not heard that before. I thought they had reached an altitude where the gear should have been up, but I'm not sure.
07-05-2019, 04:26 PM
#34
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I’ve had King Airs come out of maintenance where some flight control rigging was done and had the Rrudder trim wheel at full deflection. I caught it the time I had it but I’ve also known guys who didn’t catch and were caught quite off guard on takeoff. They said it almost felt like a V1 cut.
08-02-2019, 08:40 AM
#35
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08-02-2019, 09:24 AM
#36
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Originally Posted by topsider
01-07-2020, 09:09 AM
#38
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08-12-2020, 08:16 AM
#39
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08-12-2020, 02:10 PM
#40
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Originally Posted by Hopscotch
Also, the spooky CVR talk of the known oil issue with the ill-fated #1.
Sad.
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