What was found
CORROSION FOUND ON FUSELAGE AT MATING SURFACE OF AFT HEATED DRAIN MAST. CEPTRE LOG PAGE ENTERED FOR SDR REPORTING. SUMMARY SEE NR FOR ADDITIONAL INFORMATION 001-0462:3833-2001/004 00521 REPAIRED PER ER/A 622287-14 PRI REV 0, ER/A 595615-14 REV B PRI REV 1, REV 2 , REV 3, AND ER/A 595615-14 REV A AND REV B. ORIGINAL THICKNESS: 0.125". MAX MATERIAL REMOVED: 0.057". MINIMUM MATERIAL REMAINING: 0.068". (LP# 0681989)