Air France 66, an A380 operating Paris-LAX declared an emergency over northern Quebec and landed in Goose Bay. The number 4 engine appears to have lost its cowling and there was also reported damaged to the leading edge. Landed safely.
So airliner flying folks, was that possibly an over-correction that almost looked like it could have started getting into pilot induced oscillation before being corrected?
Yikes! Would have been a wild ride sitting at the back.
As far as looks, viewed from the front, the A380 looks like it has a major receding hairline, whereas the the 747 looks like it has steely eyes and a bit of a menacing look. No offence to those who are follically challenged.
So airliner flying folks, was that possibly an over-correction that almost looked like it could have started getting into pilot induced oscillation before being corrected?
Yeah, an interesting one to try to figure out. Landed crab on, which is acceptable, but on a dry runway the wheels can certainly grab and give a good side load while it straightens out. There is a check forward just prior to the flare which caused a higher descent rate that couldn't be arrested prior to touchdown. The fact that it hit fairly hard made the tires dig in and and really kicked the aircraft laterally, and the pilot had to recover from that, which on an airplane with that much mass isn't easy. As well, as an airplane rotates on the yaw axis like that it causes more lift on the upwind wing making it rise.
What are your thoughts Bigtime?
Last edited by Ryan Coke; 10-06-2017 at 12:16 PM.
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Having never flown anything larger than the Twin Comanche I feel like I can't really comment. I was thinking about that time while learning to fly when I managed to porpoise down quite a bit of runway 25 at YBW after getting into that situation of over-correcting a bad flare. I'm thinking (but would love to know) if that was a similar thing possibly occurring in this video but along the vertical axis.
You understand aviation and have a high knowledge level....just because you haven't done it doesn't mean you can't have a very valid opinion on it. Not to mention the group of people who has flown an airplane the size of an A380 is very small, and certainly doesn't include me.
There may be some over-controlling and oscillation there for sure, but I tend to think it is more a function of the mass of that machine being very hard to get back under control once it is moving in the wrong direction. Kind of like a small wiggle driving a Honda civic, would be a big event in a heavy semi.
From what I saw in the video, he does quickly dampen the oscillations side to side, but again with that much mass it still takes a few cycles.
But I don't think I would say that it was primarily pilot induced oscillations like you had experienced, more just landing technique errors combined with the strong crosswind.
Just MHO though.
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So airliner flying folks, was that possibly an over-correction that almost looked like it could have started getting into pilot induced oscillation before being corrected?
I always got the impression that when landing in a crab, the drag on the tires, combined with forward momentum, would be the main things straightening out the nose. On this one, he kicked the rudder over before there was any grip on the wheels, which really couldn't do anything other than swing the tail end around. Layman's view, of course....
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Great article that breaks down the difference between the tricycle style gear (as seen on most aircraft now) and the tailwheel configuration, and how they vary in stability. The trike gear is great in a crosswind as it naturally wants to straighten out upon the main gears making contact with the ground if at a crab angle.
