PPRuNe Forums - View Single Post - Lights on below 18,000’?
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Old 18th Apr 2023, 14:21
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RMC
 
Join Date: Apr 2003
Location: Sutton
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Lights on below 18,000’?

I understood this to be due to the possibility of pressurised GA traffic up to 18,000’.

This is not in the manuals for my European airline so would be really useful to have a reference / source.
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