(1) Position main light switch to BO MARKER
(TM 9-2320-365-10).
(2) Observe operation of rear blackout marker
lights.
(3) If neither rear blackout marker light
illuminates, go to step 5 of this fault.
(4) Position main light switch to OFF
(TM 9-2320-365-10).
TM 9-2320-365-20-1
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