What was found
PRODUCTION REQUEST: RH 0B AFT SEAT TRACK HAS EVIDENCE OF CORROSION AT FR71. REMOVED CORROSION ON AFT R/H O/B SEAT TRACK, FOUND OUT OF LIMITS IAW A220 ASRP J51-21-06, J53-61-49. REMOVED AND REPLACED DAMAGED SEAT TRACK IAW A220 ASRP J51-40-11, J51-42-21. (LP# 1259640)