On September 13, 2006, a Cessna 560 Citation, registered in Canada as C-GTGO, experienced an undercowl fire in the right engine, a Pratt & Whitney Canada PW535A, while the airplane was descending through 17,000 feet near Calgary, Canada. The pilots reported hearing a loud noise and seeing a flash of light from the right side of the airplane that was followed by a right engine fire warning. The pilot reduced the power to idle and then shut the engine down. The pilot declared an emergency and made a single engine landing without further incident. Examination of the airplane after landing revealed the right engine's upper and lower cowls were missing and there was considerable damage to the vertical stabilizer and right hand horizontal stabilizer. The investigation is under the jurisdiction of the Transportation Safety Board of Canada. This report is for information purposes only and contains information that was released by or obtained from the Government of Canada. Further information pertaining to this incident may be obtained from: Transportation Safety Board of Canada Place du Centre 200 Promenade du Portage, 4th floor Gatineau, Quebec K1A 1K8 Canada Telephone: (819) 994-3741