Sinn Fein said:
Reading the aviation/pilots forums (or listening to someone on the news, take your pick), they suggested both a stall in the left engine, and an issue with the prop not being "feathered" properly - which I understood to mean angled to be more aerodynamic. I think the speaker suggested it was similar to sticking your hand out the window flat v. turned, knifing into to wind.
Yeah...Having an engine out could do that too, but flying a twin-engine with one engine out is something that you have to learn to get your twin-certification (I'm NOT twin engine certified, but I understand the basics). I haven't actually read the story...was this guy taking off or landing? It's just odd to me that if it was an engine out, he couldn't maintain altitude. Usually you can...again, not an expert here with this plane, capacities, etc., but I feel like at a minimum, he should've just been able to level off and hold altitude.
Re. feathering of the props - The props on most higher-end planes can be pitched. The analogy of knifing yoru hand is perfect. You turn it to take a bigger bite out of the air on take-off and landing, and feather them a little flatter when you are at cruising speed to get better speed and economy. Again, I personally don't think that an unfeathered prop would cause a plane to drop like a rock. It still generates some forward speed and thus lift. Again, it could be different on this plane. I know I've landed having forgot to change the blade pitch before and I didn't even notice till I landed. Taking off might be different.
These things could've contributed to a stall I guess. Ultimately, that plane is falling like it's stalled...and I think the bank at the end is the result of a turn in a stall or near stall causing less lift on the one wing.