What was found
DURING C-CHECK, FOUND LEFT WING STATION 519, 10TH STRINGER AFT OF FRONT SPAR HAS CRACK AT STRINGER TO RIB ATTACHMENT (UPPER STRINGER). DRILLED REPAIR ANGLES AND RADIUS BLOCKS AND INSTALLED PER BOEING SB 727-57A-159. (M)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING C-CHECK, FOUND LEFT WING STATION 519, 10TH STRINGER AFT OF FRONT SPAR HAS CRACK AT STRINGER TO RIB ATTACHMENT (UPPER STRINGER). DRILLED REPAIR ANGLES AND RADIUS BLOCKS AND INSTALLED PER BOEING SB 727-57A-159. (M)