What was found
DURING ROUTINE C-CHECK FOUND HAT CHANNEL BROKEN AT STATION 1586 LONGERON 21 RIGHT. REMOVED FASTENERS AS NEEDED TO REMOVE DAMAGED HAT CHANNEL SECTION. FABRICATED REPAIR PARTS. LOCATED, DRILLED, TRIMMED, DEBURRED, TREATED, PRIMED, INSTALLED REPAIR PARTS AND NEW FASTENERS AT STATION 1586 LONGERON 21 RIGHT IAW DC 8 SRM 51-3-0, 53-2-0, 51-1-8 AND 51-1-21.