What was found
HOLES 1, 2, 3 & 4 IN SEAT TRACK FLANGES, AT STATION 727B, RBL 45.50, HAVE CRACK INDICATION, WHEN PERFORMING HFEC. REFERENCE EA 5320-02076 OP 4 STEP 5 4, AD2013-23-04. REPAIRED SEAT TRACK FLANGES IAW ECRA 5320-02508. SEE WIPS & TASKS ENTERED, THIS LP NR ON FLEET CYCLE FOR ALL WORK STEPS ACCOMPLISHED.