What was found
(CAN) ON APPROACH WAS ADVISED BY TOWER AND AREA CONTROL CENTRE THAT THEY MAY HAVE AN ELT INADVERTANTLY TRANSMITTING. THE AIRCRAFT WAS MET BY MAINTENANCE WHEN IT LANDED AND IT WAS DISCOVERED THAT ELT WAS FILLED WITH WATER, POSSIBLY DUE TO HEAVY RAIN STORM FROM THE PREVIOUS DAY. THE ELT WAS REMOVED FROM THE AIRCRAFT AND THE SYSTEM MELÏ¿½D AS PER APPROVED MEL PROCEDURES. THE AIRCRAFT WAS RETURNED TO SERVICE. SERVICEABLE ELT WAS INSTALLED AND THE MEL WAS CLEARED AT THE NEXT MAINTENANCE VISIT.