As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING REPLACEMENT OF NUTPLATES TO TERMINATE AD 80-11-04, NOTED AFT SPAR REINFORCEMENT WAS CRACKED (PN 0432001-15) AND THE AFT SPARS (PN 0432001-56) WERE ALSO CRACKED. SUGGEST THESE PARTS BE INSPECTED AT TERMINATIION OF AD 80-11-04. SUBMITTER NOTED EXCESSIVE 'CREAKING' NOISES WHEN MOVING HORIZONTAL UP/DOWN DURING SECURITY CHECK.