What was found
WHILE AC WAS IN FOR HVY CK FOUND CORROSION FOUND ON CENTER FUSELAGE 3 STRUCTURE RH SHEAR PANEL AT FR 87-88. REPLACED SHEAR PANEL PN 170-91919-001 IAW SRM 51-42-01, 51-42-02, 51-43-01. SEE AAR NRC# 4500907-1000-0065 FOR WORK PERFORMED. AC WAS RTS.