As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FRAME IN MX BAY ABOVE HYD RESERVOIR IS CHAFED BY LP BLEED AIR VALVE. REMOVED LP BLEED AIR VALVE FOR ACCESS TO FRAME. CUT OUT CHAFED SECTION OF FRAME AT BS 479.5. FABRICATED DOUBLER FROM NEW FRAME SECTION AND INSTALLED. IAW MM 21-11-00.