3504 Found underframe leakind sound duri ~~~~~ 3504 Found underframe leakind sound duri     #3504-B/S wheel flange magnet v/v air leak.Replace new magnet v/v & elbow.Function test wheel flange ok.No air leak found. Not: 2216418 raise to RSW. Done by Arsuddin/Zulq. 05/11/20