Final Report: 'Inadequate' icing guidance for Cessna Citations

Aviation International News » October 2008
October 13, 2008, 12:02 PM

Cessna Citation 500, Beverly, Mass., March 17, 2007–The NTSB determined the probable cause of the Air Trek Citation icing accident was the inadequate guidance
and procedures the airplane manufacturer provided regarding operation of the pneumatic de-icing boots. The Safety Board also faulted the FAA for its “inadequate directives, which failed to require manufacturers to direct flight crews to immediately operate pneumatic de-icing boots upon entering icing conditions.”

The air ambulance crew was descending for a landing at Beverly Municipal in IMC when it noticed traces of rime ice on the windshield. Since they saw no ice on the wings, they did not activate the de-icing boots. At 100 feet agl, the airplane experienced what the copilot called a “burble” before rolling “steeply” to the right. The right wingtip hit the runway-overrun area, substantially damaging the aircraft. No one was injured.

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