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Old 21st Sep 2012, 17:03
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Moi/
 
Join Date: Jul 2008
Location: miles from anywhere
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Civilian aircraft - B757, B767 etc.

Navigation lighting - Come on when A/C power applied.

An example of this is when the cabin lights are switched off, crew leaving through L1 door. Nav light still on until ground power is switched off.

Anti-Cols - Usually on when hydraulics pressurised before engine start. Most often left on post shutdown due to a missed switch.
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