What was found
DURING HEAVY CHECK, FOUND LT HORIZONTAL STAB RIB 12 FWD CENTER SPAR UPPER SURFACE AT 2 RIVETS 1 IS 4 BACK OFF OF FWD SPAR OTHER IS 5 BACK OFF FWD SPAR. MX REMOVED CRACKED FLANGES ON RIB 12A AND INSTALLED SHEAR CLIPS IAW ETD 2014-170-037309 FOR ALL WORK PERFORMED REPAIRS IS PERMANENT REPAIR AND REQUIRES INSPECTION TASK 55-10-07-0001, INTERNAL DET THRESHOLD OF 20000, F/C INTERVAL OF 20000, F/C THRESHOLD COUNTED SINCE NEW FCBS55-10-00-005 ISSED DMI 520361/1 FOR INSPECTION TASK. ACFT REMAINS UNTIL HEAVY CHECK IS COMPLETED. ANGLES FABERICATED IAW ETD 2014-170-037309 FROM 7475 T761,.040, PO 124852