Sec. 137.47 - Operation without position lights.
Notwithstanding part 91 of this chapter,
an aircraft may be operated without position lights if prominent unlighted
objects are visible for at least 1 mile and takeoffs and landings at --
(a) Airports with a functioning control
tower are made only as authorized by the control tower operator; and
(b) Other airports are made only with
the permission of the airport management and no other aircraft operations
requiring position lights are in progress at that airport.