In an unusual policy step, the FAA sought comments last month on a draft letter of interpretation regarding the meaning of the term “known icing conditions,” used–but undefined–in the FARs.
An FAA draft letter of interpretation seeks public comment by May 3 on the meaning of the term “known icing conditions,” used–but undefined–in the FARs.
Every few years, a debate erupts about whether the phenomenon of ice bridging is real or something questionable that pilots discuss while hangar flying or warning of the dangers of flying in icing conditions. The issue recently resurfaced at an NTSB public meeting about the icing-related crash of a Cessna Citation 560 in Pueblo, Colo., on Feb. 16, 2005.
Cessna Citation 550, Fort Yukon, Alaska, Sept. 30, 2005–The NTSB has concluded that the University of North Dakota icing research jet accident was caused by the pilot’s improper use of anti-icing equipment during cruise, which resulted in ice ingestion into both engines and the complete loss of power. Factors were the icing conditions, inadequate crew resource management and failure to use a checklist.
Cessna 550 Citation II, Ft. Yukon, Alaska, Sept. 30, 2005–The captain, copilot and two research scientists were not seriously injured when Citation N77ND made an off-airport, gear-up emergency landing after both engines quit simultaneously. The University of North Dakota flight was doing icing research in IFR conditions when the accident occurred.
The NTSB concluded that the forced landing of a University of North Dakota Citation 550 research jet on Sept. 30, 2005, in Fort Yukon, Alaska, was caused by the pilot’s “improper use of anti-icing,” which resulted in ice ingestion into both engines and the complete loss of power. No one was seriously injured.
Comments are due March 5 on an FAA proposal to require a low-airspeed awareness system on Cessna 208 and 208B Caravans. The installation will cancel the prohibition against operating the turboprop single in moderate or worse icing conditions.
A Danish flight-test engineer has developed a camera nose mount for the EC 120 that, he says, is stronger and lighter than the only current alternative. It can also pan 135 degrees to either side of the nose without obstructing the shot with the skids.
Morten Bang, whose day job is with the Royal Danish Air Force Air Material Command at Zeeland, north of Copenhagen, said that Eurocopter approved his device earlier this year.
Operators of all U.S.-registered Challenger 600s, 601s and 604s and Canadair Regional Jets, which are derived from the business jet, must incorporate flight manual revisions to ensure that before takeoff the “wing leading edge and upper wing surface are completely free of ice, frost, snow or slush,” under a new AD. The FAA directive (AD 2005-04-07) followed an identical AD from Transport Canada.
Much has been written lately about the potential cost of not de-icing a business airplane before attempting to fly it, so we posed the question recently in our AINalerts twice-weekly electronic news bulletin, “What about the cost of de-icing? The price seems to vary wildly. What is the most you have paid to have a business jet de-iced? What type of airplane was it, which facility de-iced it, and what were the circumstances?”