Re: DC-9 Flight Control/ hydraulic systems

From:         kls@ohare.Chicago.COM (Karl Swartz)
Organization: Chicago Software Works, Menlo Park, California
Date:         15 Jun 96 13:43:30 
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>>In the case of AAL 191, the sole changes to be implemented ...

>Wasn't something done along the lines of having a mechanical downlock
>installed to physically keep the slats in position with only positive
>hydraulic pressure able to "lift" them?

Discussed, but never added to the DC-10.  American also requested and
was willing to pay for a modification kit to move the hydraulics from
the leading edge of the wing to a safer location, but MD refused to
produce it.  (The 747 and L-1011 had both mechanical slat locks and
safer routing of the wing hydraulics from the very beginning.)

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