What was found
R2 THRESHOLD HAS SURFACE CORROSION AROUND FWD. AND AFT. GIRT BAR FITTINGS AS MARKED. REPLACED R2 THRESHOLD WITH NEW REF. SRM 53-23-11/AD03, 51-40-08, 51-40-02, 51-23-04, 51-23-05, 51-23-06 AND CPM 51-25-00. P/N 170-65639-005. TOP COATED. SEE W/O H6589 SN 332 FOR WORK DETAILS. AIRCRAFT REMAINS IN HEAVY CHECK BNA.