known icing conditions

of Housing and Urban Development (HUD), Economic Sanctions & Foreign Assets Control, Constitution Day, Citizenship Day, and Constitution Week, National Oceanic and Atmospheric Administration, Lowering Drug Prices by Putting America First, Blocking Property of Certain Persons With Respect to the Conventional Arms Activities of Iran, https://www.federalregister.gov/d/07-1620, MODS: Government Publishing Office metadata. As such, “known icing” became the boogeyman everywhere and always in winter clouds and the only legal IFR solution for non-FIKI pilots was “park it till June.” (Sorry for friends south of the equator). There has, in the past, been a degree of ambiguity in the relationship between operating rules and type certification requirements for flight in icing conditions. Because the FAA has been asked to rescind the June 6, 2006 letter of interpretation, we have decided to publish a draft of our response in the Federal Register and seek comment on it. 09/24/2020, 373 I think the rule in Part-NCO is clear enough. Aircraft handling and performance, 3. This draft letter of interpretation addresses a request by the Aircraft Owners and Pilots Association (AOPA) that the FAA rescind a letter of interpretation dated June 6, 2006 regarding “known icing conditions”. on TKS® Ice Protection is available for more than 100 different aircraft model variants for inadvertent icing and Flight Into Known Icing Conditions (FIKI). So how cold is cold enough to fly in the clouds? To add to that, in Europe the legal stuff is the following: NCO.OP.170 Ice and other contaminants — flight procedures documents in the last year. As new technology becomes available, pilots should incorporate use of that technology into their decision-making process. The Aeronautical Information Manual (AIM) defines known icing conditions as "atmospheric conditions which the formation of ice is observed or detected in flight". Meteorological information that does not evidence known icing conditions, or the extent thereof, may regardless support a finding that a pilot's operation under the circumstances was careless. It should be noted that the FAA does not necessarily agree with this position. In many cases, especially for smaller general aviation aircraft, it may be intended to allow for just a temporary period of operation in icing conditions during which the horizontal or vertical extent of the icing is vacated. The Chief Counsel's Office has referred your letter to us for response. updated on 4:15 PM on Thursday, September 24, 2020, updated on 8:45 AM on Thursday, September 24, 2020, 108 documents The text of the draft response is as follows: Luis M. Gutierrez, Director, Regulatory and Certification Policy, Aircraft Owners and Pilots Association, 421 Aviation Way, Frederick, MD 21701-4798. The engineering standard for atmospheric icing is specified in Appendix C of CS 25 / 14 CFR Part Part 25 has been broadly in its present form since it was first developed in the United States and introduced there in 1955 under the former Civil Aeronautics Board before being transferred into FAR Part 25.1419 in 1965. Bruce Glendening, Regulations Division, Office of the Chief Counsel, Federal Aviation Administration, 800 Independence Ave., Washington, DC 20591; telephone (202) 267-3073. documents in the last year, by the Executive Office of the President A Notice by the Federal Aviation Administration on 04/03/2007. (The envelopes use the term mean effective diameter, but this equates to the MVD for the Known Icing Conditions Atmospheric conditions in which the formation of ice is observed or detected in flight. Permutations on the type, combination, and strength of meteorological elements that signify or negate the presence of known icing conditions are too numerous to describe exhaustively in this letter. (3) The certificate holder has an approved deicing/anti-icing program that complies with § 121.629(c) of this chapter and the takeoff complies with that program.

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