What was found
DURING CURRENT (6/2018) C7 HEAVY CHECK AT LHT-PR, REPORTED WITH A DENT AT REAR FUSELAGE BETWEEN FR 63 AND 64, STGR 4L AND 5L MEASURING 67MM L X 46MM W X 2.6MM D (SEE REF /1/ EO FOR DETAILS). THIS AREA IS CLASSIFIED AS AN EXLUDED AREA WITHOUT REPAIR ALLOWANCES, CONTACTED. REF /3/ TD WAS PROVIDED EMBODYING REF /4/ SRM PRINCIPLES OF A SKIN CUTOUT, INTERNAL AND EXTERNAL DVI, HFEC INSPECTION, ROTOTEST INSPECTION, DOUBLE FABRICATION AND INSTALLATION, AND REPROTECTION; APPROVED THIS REPAIR AND IS CLASSIFIED AS MAJOR CATEGORY 'A'. REFER TO EC A18-500-01.