Inertial Navigation Units- LTN-72

Date:         18 Apr 98 00:49:35 
From:         junaid@cheerful.com
Organization: Deja News - The Leader in Internet Discussion
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I work in the engineering and maintenance department of an airlines.
I have been working on Inertial Navigation Units (INU) LTR-72 for the last 3
years.
These units are giving us problems when the ambient temperature goes above 90
degree F. The Display Units become blank and the RED warning flashes. Once we
remove them from the aircraft and cool them they become servicable again.

Obviously we are exceeding the max operating temperatures. These values are
not specified in the manual.

I would appreciate if anyone can explain this phenomena.
Junaid Manzoor

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