What was found
DURING HEAVY CHECK, RT HORIZONTAL STABILIZER L/E PANEL 331AL, RIB 4 HAS A CRACK. MAINTENANCE REPAIRED RIB 4 IAW ETD 2015-170-009870.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING HEAVY CHECK, RT HORIZONTAL STABILIZER L/E PANEL 331AL, RIB 4 HAS A CRACK. MAINTENANCE REPAIRED RIB 4 IAW ETD 2015-170-009870.