Proposed changes to Parts 25 and 33 address dangerous icing conditions caused by supercooled large drops including a requirement that manufacturers not only show that airplanes can operate safely in those conditions but also with specific performance and handling qualities and that “all new transport-category designs be able to fly in c
The FAA issued a safety alert for operators (Safo 01001) warning operators of aircraft with unpowered elevator controls that control forces may increase after application of Type II or IV anti-icing fluids. The Safo is the result of reports to the FAA of rejected takeoffs due to above-normal control pressure needed to achieve rotation. These rejected takeoffs were initiated at speeds above Vr or V1, according to the FAA.
AgustaWestland (Booth No. 7020) has received FAA and EASA certification for the full ice-protection system (FIPS) on its AW139 medium twin helicopter. With the FIPS option, the aircraft can fly into known icing. Approval from Transport Canada is expected soon and the manufacturer plans to deliver 12 FIPS-equipped AW139s this year.
At a February 24 hearing on aircraft icing legislators criticized the FAA for delaying implementation of rulemaking that would address outstanding issues on the NTSB’s “Most Wanted” list. “After the Colgan Air Flight 3407 accident near Buffalo last year,” said committee chairman James Oberstar (D-Minn.), “it was widely speculated that the aircraft crashed due to icing.
The House aviation subcommittee yesterday held a hearing on aircraft icing to address issues brought to light by the NTSB’s recent “Most Wanted” list of “unacceptably slow” progress on icing rulemaking.
The FAA recently issued a revised Special Airworthiness Information Bulletin–SAIB SW-08-03R1–to warn helicopter operators of the “hazards of snow and ice,” according to the FAA Rotorcraft Directorate’s Safety Management Group in Fort Worth. The bulletin, “Recommendations for Rotorcraft During Icing Conditions,” was released in 2003, and new data has been added following additional FAA testing.
Twin Commander 690C, Wray, Colo., Jan. 15, 2009–The pilot’s failure to maintain aircraft control during the landing approach, resulting in an aerodynamic stall, was the probable cause of the crash, according to the NTSB. The Board also noted that the pilot’s improper preflight planning and conditions conducive to structural icing contributed to the accident.
The FAA has issued a final rule that prohibits Part 91K, 135 and 121 operators from taking off with “polished frost”–meaning frost buffed to make it smooth–on an aircraft’s wings, stabilizers and control surfaces. The new rule takes effect at the end of this month. Previous FAA guidance recommended removing all wing frost before takeoff, but allowed it to be polished smooth if the aircraft manufacturer’s recommended procedures were followed.
The FAA yesterday issued a final rule that prohibits Part 91K, 135 and 121 operators from taking off with “polished frost”–meaning frost buffed to make it smooth–on an aircraft’s wings, stabilizers and control surfaces. The new rule will take effect on Jan. 30, 2010. The FAA already prohibits major and regional air carriers from operating with polished frost.
Coincidental to the early taste of winter weather the Northeast received in mid-October, NBAA–in conjunction with local airport user groups and state business aviation associations–sponsored a pair of cold-weather operational seminars aimed at exploring the challenges and threats presented by in-flight and ground icing, as well as runway contamination.