What was found
L2 THRESHOLD HAS SURFACE CORROSION AROUND FWD. AND AFT. GIRT BAR FITTINGS AS MARKED. REPLACED L2 THRESHOLD WIT H NEW AND TOP COATED REF. SRM 53-23-11/AD03, 51-40-08, 51-40-02, 51-23-06 AND CPM 51-25-00. P/N 170-65703-005. SEE W/O H6589 SN 275 FOR WORK DETAILS. AIRCRAFT REMAINS IN HEAVY CHECK BNA.