What was found
DURING HEAVY MAINTENANCE: CRACK INDICATION FOUND IN OPEN HOLE ZONE 1, POSITION 4 OF VERTICAL STRINGER RADIUS IN CENTER FUSELAGE ON FR 36, CRACK DEPTH 0.129 INCH CRACK DIRECTION 3 AND 4 O'CLOCK VIEW LOOKING AFT; REF AEROMAN NR 2025-682309 WO 2025 413/1 PERFORMED REPAIR AT HOLE 1 ZONE 1 POSITION 4 OF VERTICAL STRINGER RADIUS CENTER FUSELAGE FR 36 IAW EC A25-1157-01 & EC 57-00117-25 REPAIR IS CAT A NO FURTHER INSPECTION REQUIRED IAW RDAF 81690844/003 2025.