As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION LEVEL 2, DURING HEAVY CHECK, FOUND CORROSION ON BOTTOM SIDE OF KEEL BEAM CHORD FROM AFT EDGE TO 4 INCHES OF AFT EDGE. REMOVED KEEL BEAM CHORD FROM FRAMES 25-27 AND REMOVED CORROSION. FABRICATED AND INSTALLED NEW KEEL BEAM CHORD IAW ATR42 SRM. (M)