What was found
UPON PERFORMANCE OF INSPECTION OPERATION MD OF MFG MM, SEVERE EXFOLIATION, CORROSION WAS FOUND ON BOTH OB FLAP TRACKS. AREAS ON FLAP TRACK WHERE CORROSION WAS DISCOVERED INCLUDE: AFT RECESSED WEB AREA AND ADJACENT UPPER AND LOWER PORTIONS OF TRACK. CONTRIBUTING FACTORS TO THIS INCLUDE; AIRCRAFT EXPOSED TO SALT AIR ENVIRONMENT FIRST YEARS OF LIFE AND HAS CONTINUED TO LIVE OUTSIDE. RECOMMEND INITIAL INSPECTION INTERVAL OF 15,000 LANDINGS BE REDUCED. (17308 LANDINGS)