What was found
***WHILE A/C WAS OUT OF SERVICE FOR A HEAVY CHECK*** RH HORIZ STAB FWD RIB 11 CRACKED. ACCOMPLISHED 170EO-55-10-0004-1 WHICH REPLACED LH & RH HORIZ STAB RIBS 10A, 11A & 12A. A/C REMAINS OUT OF SERVICE FOR HEAVY CHECK COMPLETION.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
***WHILE A/C WAS OUT OF SERVICE FOR A HEAVY CHECK*** RH HORIZ STAB FWD RIB 11 CRACKED. ACCOMPLISHED 170EO-55-10-0004-1 WHICH REPLACED LH & RH HORIZ STAB RIBS 10A, 11A & 12A. A/C REMAINS OUT OF SERVICE FOR HEAVY CHECK COMPLETION.