What was found
STROBELIGHT MOUNT BRACKET, SHOCK MOUNTS DETERIORED AND UNIT HELD IN PLACE BY ONE SHOCK MOUNT, ALL SHOCK MOUNT ATTACH HOLES IN BRACKET WORN/ELONGATED, SO MOUNTS WERE NOT ABLE TO REMAIN ATTACHED. INSPECTION OF THIS AREA WAS BY REMOVING ACCESS PANEL 9715 PREVIOUS LISTED IN BOEING 727 MPD D6-8766-2 REV H DATED 3/78, PER -D- CHECK 6-55-12. D-CHECK REQUIREMENT. REQUIREMENT REVISED TO C-CHECK LEVEL PER REVISION TO MPD D6-8766-2 REV K DATED 4/80 OF BOEING 727 AND ACCESS PANEL 9715 REQUIREMENT TO REMOVE HAS BEEN DELETED THEREFORE NOT PRESENTING AVAILABILITY TO INSPECT MOUNT/BRACKET ATTACHMENT.