As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NUMEROUS UNIVERSAL .25 ORANGE COLORED HI-LOK COLLARS WERE FOUND CRACKED FROM THE BASE TO THE TOP, IN THE WHEEL WELL AREA. COLLARS ARE COMMON TO FRAME SPLICES AND VERTICAL STIFFENERS ALONG THE KEEL BEAM. *S/D* CRACKED COLLARS DUE TO IMPROPER HEAT TREATMENT, -T6 INSTEAD OF -T73. REFERENCED BOEING MESSAGE M-7272-94-4800 AND REPLACED CRACKED HI-LOK COLLARS.