As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN)FUEL STAIN NOTICED ON LOWER SIDE OF HEADER. HEADER TANK REMOVED, FOUND CORRODED THROUGH FROM INSIDE WITH SUBSTANTIAL AMOUNT OF DIRT, SMALL STONES, PRC (PROPLETS & RUBBER PIECES). THIS CORROSION WAS FOUND ON TWO OTHER SIMILAR AIRCRAFT (S/N T34-013 AND T34-014). NEW HEADER TANKS P/N 9104-32 INSTALLED. *NOTE - NEW HEADER TANK HAS A LARGER TAPERED SUMP.