#3677 underframe heavy air leak sound MR ~~~~~ #3677 underframe heavy air leak sound MR     Check Tims observed FC-704 Air dryer fault.Further check found air dryer constant air leaking from exhaust port.Replaced Air dryer and function test ok.Air leak test 0.3bar/5min. #3677 Air Dryer:- Old s/n: 3513-1300-25 New s/n: 015-12590 Not: 2433492 Done by Sanip/Koh/Rizman. 07/11/22