"John S. Shinal" wrote in message
...
"Leadfoot" wrote:

It's not just the loss of the engine, it's the shredding of vital
componenets all along the rear of the wing that takes the plane down.

If you'd ever had a CLOSE look at all the crap that runs all along the
rear
of a wing of a commercial airliner you'd lnow what I'd mean. The aileron
and flaps don't work so good with hydraulic lines shredded.

Indeed, if we're talking about SE climb, we're wincing and
looking at the best possible case. A fuel and hydraulic fire seems a
lot more likely, plus the control failure you note.

Q : are the hydraulic systems isolated left and right ? So
that a hit on one side doesn't cause immediate failure of the other
side ? I'm wondering if still having one working aileron might leave
enough control authority so that another Al Haynes might yet get it
down somewhat intact.

I've been out of the industry for over 5 years so I'm really on aincient
(64KB ;-) memor\y

There is really good isolation in the fuselage, however as space gets more
confined as in the trailing edge of a wing everything gets closer and closer
together. Most of my experience is with 747 and L-1011's which have more
than 2 separate system which means you have more redundancy ro play with

As for whether you can effectively fly with one aileron out you'd need to
ask a pilot. As I recall most have inboard and outboard ailerons which are
always on different hydraulic sytems



Q : Do any large airliners run these essential systems near
mid wing or toward the front by the spar ?

Not much choice you run the lines where they need to go. Mid-wing generally
is part of the gas tank. If you are sitting over the center wing box in the
fuselage of a 747 you are generally sitting over 50,000 pounds of fuel. I do
recall the AC generator lines do not get run in the trailing edge but in the
leading edge





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