What was found
B757-52-3-0374 R4 DOOR - LOWER GATE SKIN EDGE, ALONG THE RUB STR IP IS CORRODED (MK 033-595) REF N/R 0071408. CHECKED LIMITS TO CORROSION R4 DOOR AT LOWER GATE SKIN EDGE, ALO NG RUB STRIP; L=1.2" W=.30" D=.150". OUT OF LIMITS IAW SRM 52-10-02 FIG 101, DETAIL IV PG 104. REMOVED AND REPLACED GATE ASSY WITH P/N: 19-5211-3-0702, BATCH: 0003534845, PO: TUA00002 63 IAW DRAWING 140N2613 AND SRM 51-40-04 FIG 101, TABLE II.