What was found
LOWER EXTERIOR FUSELAGE, STA 500A-500G, BL-0, SKINIS CORRODED AT 5EA DRAIN PLUGS. DOTS N074 AND N073DOT: N074TIPR833K. GROUNDED - YES. REMOVED CORROSION FROM LOWER SKIN AT STA 500A-500G BL-0 AT 5EA DRAIN PLUGS ORIGINAL THICKNESS OF 0.080", LOSS OF 0.003", WITH 0.077" REMAINING, FOUND TO BE WITHIN LIMITS IAW B737-800 SRM 53-70-01-1A-1. HIGH FREQUENCY EDDY TEST ACCOMPLISHED. WITH NO INDICATIONS IAW B737 NTM PT6, 51-00-00. ALODINED, PRIMED AND PAINTED AREA IAW B737 SRM 53-30-01-1A-1.TH: T8224C, T8257IDOT REMOVED.