What was found
DURING M-CHECK FOUND MAIN CABIN STA 775, FLOORBEAM HAS 3 CRACKS AT LT FRAME TO FLOORBEAM ATTACH POINT. ALL REPAIRS INCLUDING SRM REPAIRS REQUIRE EA APPROVAL MANAGER ACO, FORM 5100-3201 REQUIRED. PRIOR TO FLIGHT PSE 53-09-015 REF EM 5320-01037-01A STEP 9. REMOVED CABIN FLOORBEAM AT STA 775 L/S LBL 20 & LBL 60 IAW SRM 51-30-2 & 51-30-5 ORDERED & RECIEVED NEW FLOORBEAM PN 991527-505, LOT 1031961 LOCATED DRILLED & DEBURRED HOLES IN FLOORBEAM AT STA 775 IAW SRM 51-10-4 & DWG 9916527-5058 ALODINED & PRIMED HOLES IAW SRM 51-10-3 INSTALLED FLOORBEAM AT STA 775 LBL 20-60 IAW SRM 51-30-2 & 51-30-5.