Here is the situation. Our Citation Excel has a problem burning the exterior emergency lights (the ones that illuminate the wing) out. So my manager tells us to only turn on the "Passenger Safety Lights" during the night. This switch illuminates all the Emer. Exit lights (inside and outside) as well as Seat Belt Sign. During the day he wants the switch placed in the Seat Belt position. This only illuminates the Seat Belt Signs-no Emer. Exit lighting. I say everything should be lit for every takeoff, landing and taxi in case of smoke or some other unforseen problem. Does anyone know of a requirement that would support my position. This airplane is operated under Part 91
Thanks
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