Re: hydraulic problems with DC-10's??

From:         pab@po.CWRU.Edu (Pete Babic)
Organization: Case Western Reserve University, Cleveland, OH (USA)
Date:         10 Dec 92 16:07:11 PST
References:   1 2
Followups:    1
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In a previous article, (Robert Dorsett) says:

>The slat retraction DID affect the wing: it then became both a control and 
>aerodynamic problem.  Exercising established control practices in an 
>unknown aerodynamic regime crashed the airplane (I'd love to know whether
>this went into Airbus's "pilot error" database :-)).  Had the slats remained
>down, the airplane would have survived the engine failure, even with the 
>failure of the stall warning system.  Other airframe manufacturers have 
>manual locking mechanisms for their slat jackscrews.  McDonnell Douglas 
>relied on hydraulic pressure to hold it all together.
>Incidentally, this problem wasn't corrected: the SUX DC-10 also experienced 
>extension of its slats after it lost all its hydraulics.

Does anyone know if the MD-11 has a proper locking mechanism for the slats?
I'm a layman when it comes to aircraft design, but the DC-10 really looks
like a substandard design that has killed a bunch of people due to cost
cutting short cuts.

Pete Babic  -          ///
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