Originally Posted by
airbus757
Perhaps you could explain why we switch the "landing lights" on for takeoff. Personally I like to have all the forward illuminating lights on unless I see a reason not to... low vis ops for example.
So says the manufacturer and when NLG is retracted LL are the only ones left shining. It is the geometry of TO lt that makes the difference i think. There's no reason for TO lt for approach (trajectory -3° is illuminated by LL, NLG has three other bulbs, filament life is reduced) and it could impair visibility during flare. My guess is that the A/C was not certified using TO lt for approach anyway but the other way around.
FD.