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.
Ice protection system
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.
The pilot flying a Cessna Caravan that crashed after takeoff on Oct. 6, 2005, in Winnipeg, Manitoba, violated operational requirements, according to the Canadian Transportation Safety Board’s final report. Among the violations were taking off at a weight greater than the legal maximum takeoff weight and exceeding the time allowed between wing contamination inspection and takeoff.
Part 25 aircraft likely to get more stringent icing rules
Electro-thermal ice protection systems made by UK company GKN Aerospace (Chalet G1-3) have been selected for every major aircraft for which electric de-icing systems have been specified, according to senior vice president of sales and marketing Frank Bamford. Applications for which the GKN system has been chosen to-date include the F-35 Joint Strike Fighter, Boeing 787 and EH101 medium/heavy lift helicopter.
Bombardier’s proposal to build a three-row stretch follow-on of its 86-seat CRJ900 not only begs the question why, but perhaps more immediately, how. Bombardier v-p of marketing and sales Trung Ngo has built the business case for an airplane that would represent the third stretch of a tube originally meant for the Challenger business jet.
Just as the cold weather starts to take hold in the higher reaches of North America, Sikorsky’s S-92 has passed one of its critical remaining airworthiness tests: crews with Cougar Helicopters in Canada are now cleared to fly their aircraft into known-icing conditions.
Because of 120- to 140-knot headwinds, two Circuit City Citations were making a refueling stop at Pueblo (Colo.) Memorial Airport (PUB), on Feb. 16, 2005, en route to California from Richmond, Va., the chain’s headquarters. One of the Citations, N500AT, crashed on the approach; the other landed without incident.
Apparently, it’s just a time-honored myth that the Inuit language of native Alaskans has as many as 400 different words covering all forms of frozen precipitation. In fact, there are about a dozen, just like in English.