3542 Air Leak from undercarriage.(DT Che ~~~~~ 3542 Air Leak from undercarriage.(DT Check) Air leak Failed.  3542 checked/found B/S WFL hose dislodged. Replaced the connector & resecured the hose - OK. Function check WFL - OK. Air leak test = 0.4 bar/5 mins.  Sarma/Farid 44464