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DBerelsman(at)aol.com
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 Posted: Mon Sep 25, 2006 1:13 pm Post subject: Use or non use ? |
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To Bob and the list.
I live in Florida and fly an older 182. (Vintage 1976)
I am wondering about the best way to preserve these older avionics boxes, relays, contacts, switches and dials.
Is it best to:
Keep them off whenever they are not used (meaning they could be off for months at a time)... during which time they may be subjected to large ambient temperature changes of 50-120 deg - being inside the cabin of a plane which sometimes must be parked outside in the sun.
OR....
Use them as much as possible... thereby exercising the switches and dials and coursing electrons thru every contact... but heating up the old semiconductors still further.
Opinions please.
[quote][b]
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nuckollsr(at)cox.net
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| Posted: Mon Sep 25, 2006 7:33 pm Post subject: Use or non use ? |
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At 05:12 PM 9/25/2006 -0400, you wrote:
| Quote: | To Bob and the list.
I live in Florida and fly an older 182. (Vintage 1976)
I am wondering about the best way to preserve these older avionics boxes,
relays, contacts, switches and dials.
Is it best to:
Keep them off whenever they are not used (meaning they could be off for
months at a time)... during which time they may be subjected to large
ambient temperature changes of 50-120 deg - being inside the cabin of a
plane which sometimes must be parked outside in the sun.
OR....
Use them as much as possible... thereby exercising the switches and dials
and coursing electrons thru every contact... but heating up the old
semiconductors still further.
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For the most part, the most environmentally destructive
thing you can to do airplanes and their components (including
electronics) is to let them sit idle for long periods of
time. Obviously, many components have a service life that
is used up more rapidly if the airplane is used often.
However, unless the airplane is used in a rental fleet
the strongest effects are likely to be environmental and
generally exacerbated by lack of use.
If it were my airplane, I'd operate every switch and rotate
every control through a full cycle on every pre-flight.
Bob . . .
---------------------------------------------------------
< What is so wonderful about scientific truth...is that >
< the authority which determines whether there can be >
< debate or not does not reside in some fraternity of >
< scientists; nor is it divine. The authority rests >
< with experiment. >
< --Lawrence M. Krauss >
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