Re: 727 cooper vanes

Date:         29 Aug 97 08:10:40 
From:         Chris Elberfeld <>
References:   1 2
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Carl Peters, M.D. wrote:
> During takeoff, the airstream deflects the vane 90 degrees,
> which slides the the body of the device across the door margin, thus
> precluding the opening/lowering of the stairs.

A strong wind blowing in the right direction across the tarmac can
deflect the Cooper switch, causing ramp wokers to have to jump
up and down trying pull the switch back so the rear steps can
be lowered.