What was found
MCN - DURING C18 CHECK DISCOVERED CORROSION ON SEAT TRACK AT BS 899 AND BL 45R. CORROSION WAS REMOVED AND WAS FOUND TO BE OUT OF LIMITS IAW BOEING 737-300 SRM 53-00-52-1A 1 FIG 101. REMOVED SECTION OF SEAT TRACK FROM BS 887 TO BS 947 IAW BOEING 737-300 SRM 53-00-52-2R3. FABRICATED NEW SEAT TRACK IAW BOEING 737-300 SRM 53-00-52-2R3. INSTALLED FABRICATED REPAIR PARTS FROM BS 887 TO BS 947 AND BL 45R IAW BOEING 737-300 SRM 53-00-52-2R3 FIG 201.