Question ATPL - Airline Transport Pilot license - Air Law

209 - ATPL - Lights on and in the vicinity of aerodromes may be turned off, provided that they can be again brought into operation:

At least 15 minutes before the expected arrival of an aircraft

At least 30 minutes before the expected arrival of an aircraft

At least 5 minutes before the expected arrival of an aircraft

At least one hour before the expected arrival of an aircraft