Re: Peruvian 757 crash -- possible cause reported

From:         kls@ohare.Chicago.COM (Karl Swartz)
Organization: Chicago Software Works, Menlo Park, California
Date:         06 Nov 96 05:12:35 
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The media has been reporting that a possible cause has been identified
for the October 2nd crash of AeroPeru flight 603, into the Pacific
Ocean near Lima, the third 757 crash.  NOTE -- this is nothing close
to an official determination, though it doesn't sound like complete
bunk as did much of the early information on this crash.

Reportedly, maintenance crews placed duct tape over the static ports
(which feed the airspeed, altitude indicators, and verticle speed
indicators) to protect them during "polishing" of the aircraft, then
forgot to remove the tape.

This would explain the complete instrumentation failure, though it
fails to explain why the pilots did not recognize a problem with the
airspeed indicator during takeoff and either abort the takeoff or
immediately return to the airport.  (The pilots first reported
problems and requested a return to Lima about five minuts into the
flight.)

It sounds very much like the Birgenair 757 crash, except in that case
they had two good systems but failed to use them.

--
Karl Swartz	|Home	kls@chicago.com
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