Related somewhat. This is Air Canada Jazz
on Thursday June 9th one of the new model CRJ-705s being flown by Jazz Air between Houston and Calgary had a stick shaker incident near Colorado Springs. The aircraft (C-GJAZ) was at FL410 and was at Mach 0.70 when the flight encountered a downdraft and the stick shaker activated. Maximum thrust was set and a lower altitude was requested. The airplane descended at approximately 1000 fee per minute with a 3 degree nose down attitude. An attempt to recover at flight levbel 4000 was made but the stick shaker activated briefly and the descent was continued. Recovery was made at flight level 380 and the airplane returned to a planned speed of Mach 0.77. There were 62 passengers on board and no injures were reported. The Transportation Safety Board of Canada has secured the flight data recorder and has provided an accreditted representative to the investigation. The NTSB will be conducting the prime investigation since it happened over U.S. airspace.