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In a message dated 9/17/03 11:10:39 AM Eastern Daylight Time, 
[EMAIL PROTECTED] writes:

> Every second A&P I've asked about this gives the
>  opposite answer as to whether this is correct labeling
>  and nomenclature or not :-)

Look at it this way:

When the switch is in the "Both" position, they're both ON (switches
open), 
right?  So, when it's in the Left position, the left mag should be ON,
right? 
So the left mag SWITCH should be OPEN (OK, off).

It doesn't matter in flight, but it is confusing and potentially dangerous
if 
it doesn't work as expected when, say, someone's working on a mag...

So, if your mag switch is wired backwards, and you've been fixing the
wrong 
mag...

RE: toggle switches, many old aircraft positioned toggle switches so that 
when pressed down they were "ON", so the mag switches you describe operate
as 
expected, but are in fact installed upside down to make this happen...
;~)

John
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