Real-time feedback: Pax reported air discharged sound at Rear DT car, B1 door. Staff (BDL) checked a nd confirmed no air discharged sound. No other abnormality. TC feedback MR pressure above 10 bar. ~~~~~ 3553 Real-time feedback: Pax reported air discharged sound at  B1 door. Staff (BDL) confirmed no air discharged sound. No other abnormality.  3553 suspect air discharged sound is coming from WFL. OPS 20 raised to check further due to unavailability of maintenance pit. Air leak test (0.75 bar/5 min).  Sarma 44162 To follow up.  3553 found B/S WFL magnet v/v actuator air leaking. Replaced the faulty component & function test - OK. #3554 A/S WFL elbow adaptor air leaking & replaced the adaptor. Leak & function test - OK.  Ridzuan/Suhairi/Syukur 44162