What was found
DURING HEAVY CHECK MAINTENANCE FOUND FWD FUSELAGE FR17 STR 27L/28L SHEAR CLIP CORRODED. REMOVED AND REPLACED SHEAR CLIP FOR FR 17 BETWEEN STRINGER 27L / 28L. REF SRM 51-40-08. RESTORED SURFACE PROTECTION REF SRM 51-23-05, 51-23-06, CPM 51-25-00 A/C REMAINS IN CHECK.