What was found
LEFT HORIZONTAL STAB RIB ASSEMBLY 4 (STAB STA 120.30) HAS CRACK AT 4TH STIFFENER. REPAIRED LT HORIZONTAL STABILIZER RIB ASSEMBLY 4 AT STAB STA 120.30 4TH STIFFENER, IAW SRM 55-10-09-2R-5. 59796C 20 OCT '20.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
LEFT HORIZONTAL STAB RIB ASSEMBLY 4 (STAB STA 120.30) HAS CRACK AT 4TH STIFFENER. REPAIRED LT HORIZONTAL STABILIZER RIB ASSEMBLY 4 AT STAB STA 120.30 4TH STIFFENER, IAW SRM 55-10-09-2R-5. 59796C 20 OCT '20.