What was found
DURING HEAVY CHECK MAINTENANCE FOUND FWD FUSELAGE FR16 STR 27L/28L SHEAR CLIP CORRODED. REMOVED AND REPLACED SHEAR CLIP FOR FR16 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.