Re: Boeing 737 crash

From: (Jim Wolper)
Organization: Idaho State University, Pocatello
Date:         04 Jan 95 00:40:58 
References:   1
Followups:    1
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The fact that the aircraft's altimeter had been set in Amsterdam is
not relevant, since it had spent time flying above the transition
level.  This varies from country to country, but above this altitude
all altimeters are set to standard pressure (29.92"Hg or equivalent
metric settings).  A more likely problem would in fact be a confusion
as to whether the altimeter setting received from ATS was in 
millibars or inches; several accidents and incidents have been traced
to this problem.

Most ILS receivers are usable worldwide, by the way.  The same is true
for VOR and NDB systems.
Jim Wolper CFII
Department of Mathematics         <email:>
Idaho State University
Pocatello, ID  83209-8085  USA