As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SUPPORT TASK: WHILE PERFORMING B737-900ER SRM 57-41-01-2R-7 REPAIR 7 FOR LOOSE FASTENERS AT LH WING FIXED LEADING EDGE, FOUND CRACKED STIFFNER PN# 116A4530-1. REMOVED AND REPLACED STIFFENER PN 116A4530-1 IAW BOEING DWG 116A4008 RV - AND REPLACED 2 RIVETS ON OUTBOARD SIDE WITH HILOCKS IAW SRM 57-41-01-2R-7.