What was found
(CAN) FAULT: REF L1523271 AFT CHILLER POPS CB, FOUND UPPER CHILLER WIRING BURNED AND ARCED TO BOTTOM OF FLOORBEAM . FLOORBEAM AT STN 1540 , 26 INCHES RT OF CENTER LINE. HAS HOLE BURNED THROUGH LOWER CHORD APROX .8750 INCHES WIDE , .5 INCH ACROSS LOWER CHORD, .2500 INCH UP FWD FLANGE. ACTION: FLOORBEAM AT STN 1562 REPAIRED IAW PP B767-53-19570. TEMP REPAIR ANGLE TO BE REPLACED WITH NEW REPAIR ANGLE IAW SRM 51-70-12 FI G 1 OR FIG 2 AT NEXTM-CHECK.