What was found
DURING AIRCRAFT C-CHECK, CORROSION WAS FOUND IN THE BETWEEN BS 1307 & 1285, S36L. THERE IS A PREVIOUS EXTERNAL REPAIR DOUBLER AT BS 1300, S36L WAS REMOVED FOR DISPLACEMENT OF THE SKIN P/N 146T3211-1. THE MINIMUM REMAINING THICKNESS IS 0.045” THEREFORE IS OUT OF LIMIT IAW SRM 53-00-01 ALLOWABLE DAMAGE. PERMANENT REPAIR INSTRUCTIONS WERE APPROVED. AIRCRAFT REPAIRED AND RETURNED TO SERVICE.