What was found
DURING HEAVY MAINTENANCE, CORROSION WAS FOUND AROUND THE DRAIN MAST AREA AT THE RH APU ACCESS DOOR BTWN FR 80A-81A & STGR 20. CONTACTED MANUFACTURERFOR REPAIR DISPOSITION AND THEY PROVIDED REF /2 RDAS APPROVAL TO ACCOMPLISH PERMANENT REPAIR PER REF /3/ TD. THE REPAIR IS CONSISTS OF CUT OUT THE DAMAGE AREA, FABRICATE AND INSTALL A REPAIR DOUBLER AND RESTORE SURFACE PROTECTION PER SRM. THIS EC A19-065-01 ACCOMPLISHES PERMANENT REPAIR PER THE REF /1/ EO & REF /2/ RDAS WITHOUT DEVIATIONS; THIS PERMANENT REPAIR IS APPROVED VIA REF /2/ RDAS AND THIS REPAIR IS CLASSIFIED AS “MAJOR”.