What was found
WHILE PERFORMING SL 737-SL-33-064 THE LAST PART OF THE INSTRUCTIONS STATES TO CHECK THE ORIENTATION ARROW ON THE ROTATING BEACON FOR FACING FORWARD. THERE WAS NO ARROW ON THE INSTALLED BEACON. SL SHOWING THE ELECTRICAL RECEPTACLE CLOCK POSITION ON THE TOP OF THE BEACON. USING THIS REFERENCE, IT WAS DETERMINED THAT THIS ROTATING BEACON WAS INCORRECTLY INSTALLED, ROTATED. THE BEACON ASSY WAS REMOVED AND RE-INSTALLED IAW SL INSTRUCTIONS.