What was found
**WHILE IN HEAVY CHECK** MAINTENANCE FOUND LEVEL 2 CORROSION LT SEAT TRACK FR 18-19. MAINTENANCE REMOVED DAMAGED PART AND FABRICATED REPAIR PARTS FOR LT SEAT TRACK BETWEEN FRAMES 18 AND 19 IAW SRM 53-10-10-REPAIR 03 LOCATED, DRILLED ,ALODINED AND INSTALLED REPAIR PARTS REF SRM 51-40-02,51-23-04. AIRCRAFT REMAINS IN HEAVY CHECK FOR DURATION OF THE CHECK.