User Name:Ridley, RodDate:2009/04/20Further Action Required:No O.P.I.:System SafetyNarrative:UPDATE TSB reported that the Adlair Aviation Beech 200, registration C-GCYN, was en route Yellowknife to Cambridge Bay, on a medical charter, when one of the two passengers on board left their seat and became disruptive. An emergency was declared and the cabin was depressurized in a effort to get the male passenger under control. The disruptive passenger subsequently opened the main cabin door and exited the aircraft. The incident occurred approximately 114 NM southwest of Cambridge Bay, at FL 230. The aircraft continued to Cambridge Bay with the cabin door open, and landed without further incident. The male passenger is presumed deceased; the flight crew and the remaining passenger were uninjured. The Cambridge Bay detachment of the RCMP is investigating the occurrence.