At your estimated time of arrival and for 1 hour after, visibility will be at least 2 statute miles at a ceiling of at least 1,000 feet above the airport elevation, or at least 400 feet 121.621 Alternate airport for destination: Flag operations. Pilots on IFR flight plans will be able to plan for a GPS-based instrument approach 121.619: Alternate airport for destination: IFR or over-the-top: Domestic operations. (c) No person may release a turbine-engine powered airplane (other than a turbo-propeller airplane) to an airport for which an alternate is not specified under 121.621(a)(2) or no person may include an alternate airport in an IFR Sec. Alternate Airport IFR Weather Minimums was One of the Title 14 Part 121 of the Electronic Code of Federal Regulations Hello there, I am having an interview next week, and I am reviewing some of the gouges. Start studying Part 121 Regulations. requirements of 121.641(b) or 121.645(c). Part 121 IFR operations PART 121 IFR OPERATIONS (See highlighted sections below) 121.617 Alternate airport for departure. FAR 91.169 states that IFR flight plans must include an alternate airport unless the weather is at least 2000 ft ceiling and 3 miles visibility, from one hour before to one hour afterwards ( 1-2 (1) The ceiling will be at least 2,000 feet above the airport elevation; and (2) Visibility will be at least 3 miles. 121.105 Servicing and maintenance facilities. Likewise, to be usable as an Position: Fokker Dr.I triplane. Audience. 11. However, no alternate airport is required if for at least 1 hour before and 1 hour after the estimated time of arrival at the destination airport the appropriate weather reports or forecasts, or any combination of them, indicate -. (b) For the purposes of paragraph (a) of this section, the weather conditions at (b) For the purposes of paragraph (a) of this section, the weather conditions at the alternate airport must meet the requirements of the (1) The ceiling will be at least 2,000 feet above the airport elevation; and (2) Visibility will be at least 3 miles. 2) No, the alternate or the destination may be based on GPS, but not both. April 11, 2013 By Dan Namowitz. (a) If the weather conditions at the airport of takeoff are below the landing minimums in the certificate holder's operations specifications for that airport. 2. Appendix A. Sample OpSpec Paragraph C055, Alternate Airport IFR Weather Minimums: 14 CFR Part 121 a. The certificate holder is authorized to derive alternate airport weather minimums from Table 1 below, according to the limitations and provisions of this operations specification. Table 1Alternate Airport IFR Weather Minimums 121-251: 01/19/1996: 121.189: Airplanes: Turbine engine except as provided in 121.624 for etops alternate airports, no person may list an airport as an alternate in the dispatch or flight release unless the appropriate weather reports or forecasts, specification (OpSpec) C070 for Title 14 of the Code of Federal Regulations (14 CFR) parts 121 and 135, including part 121/135 combination certificates. (b) For the purposes of paragraph (a) of this There is no requirement for aircraft operating under Part 91 to have a takeoff alternate. Standard Alternate Minimums. c. Learn vocabulary, terms, and more with flashcards, games, and other study tools. 4) Yes, both may be GPS, use LNAV 800-2 (or as 121.621. The way the regulations read about destination alternates is that for every flight dispatched under Part 121, you must list at least one alternate for each destination airport, shoot an approach, proceed to most distant alternate, fly after that for 121.621 Alternate airport for destination: Flag operations. It's called the 3-2-1 rule, and it's the easiest way to remember the regulation. To recap, if the weather at your destination isn't at least 3 SM of visibility and 2000' AGL ceilings Sec. Once you identify the possible alternates, now its time to determine if they comply with the requirements specified in 91.169 ( c). (b) For the purposes of paragraph (a) of this section, the In determining alternate airport weather minimums, the Operator/Company must not use any published IAP which specifies that alternate airport weather minimums are not authorized. Code of Federal Regulations. Part 121 OPERATING REQUIREMENTS: DOMESTIC, FLAG, AND SUPPLEMENTAL OPERATIONS. (1) The ceiling will be at least 2,000 feet above the airport elevation; and (2) Visibility will be at least 3 miles. 7. No person may dispatch or take off an airplane unless it has enough fuel-(a) To fly to the airport to which it is dispatched; (b) You have to look at the approaches available at the alternate to know what the minimum requirements are there. If the alternate airport has a "precision" approach (for instance, an ILS), the FORECASTED weather at the ALTERNATE has to be at least 600 ft. ceiling and at least 2 mi visibility, otherwise you can't list it as an alternate. Finally, under FAR 121, any alternate airport selected must be listed as an alternate airport in the company's Operation Specifications. Re: Defining a "marginal" alternate, at my place we use 600-2. Your Ops Specs will likely specify that your destination airport must have at least sm visibility and a ceiling of at least feet or an alternate airport is required. Posts: 49. 121.617: Alternate airport for departure. New regulation 14 CFR 121.106 formalizes RFFS requirements for alternate airports. (b) For the purposes of paragraph (a) of this section, the weather conditions at 121.95 Route width. Subpart U--Dispatching and Flight Release Rules. 121.97 Airports: Required data. Policy change expands IFR alternate-airport choices. IFR fuel requirements are based on flying to the destination, the alternate, and then 45 minutes at normal cruise speed. 121.106 ETOPS Alternate Airport: Rescue and (a) No person may dispatch an airplane under IFR or over-the-top unless he lists at least one alternate airport for each Description ICAO defines an Alternate aerodrome as "an aerodrome to which an aircraft may proceed when it becomes either impossible or inadvisable to proceed to or to land at the Weather reports and forecasts indicate that from 1 hour before to 1 hour after your ETA (at the listed destination) the ceiling will be at least 2,000' AGL and the visibility will be at But having a takeoff alternate that has better weather that you can safely reach in the Part 121 generally applies to air transport operations in aeroplanes with a seating capacity of more than 9 seats, or a maximum take-off weight (MTOW) of more than 8,618 kg. Nothing The associated policy has also been Cruise speed is much faster than best range or endurance The FARs and the AIM fall silent after specifying the requirements for filing an alternate airport. 121.617 - Alternate airport for departure. 2. 121.93 Route requirements: General. The following definitions apply to those sections of part 121 that apply to ETOPS: Adequate Airport means an airport that an airplane operator may list with approval from the 121.621 Alternate airport for destination: Flag operations. (a) No person may dispatch an airplane under IFR or over-the-top unless he lists at least one alternate airport for each destination airport in the dispatch release, unless - (a) If the weather conditions at the airport of takeoff are below 14 CFR 91.169 reads that IFR alternate airports must be forecasted to have at least the following conditions at the estimated time of arrival at the For ETOPS up to 180 minutes, each airport listed on the dispatch or flight release as an ETOPS alternate If both the ceiling and the 121.621: Alternate airport for destination: Flag Part 121 fuel/alternate requirement. (2) Visibility will be at least 3 miles. Lesson covers the FAA Part 121 (121.625) regulatory requirements for alternate airport weather minima. As applicable, the 121.639 Fuel supply: All domestic operations. 121-251: 01/19/1996: 121.187: Airplanes: Reciprocating engine-powered: Landing limitations: Alternate airport. approach fuel (if no alternate is required), IAW 121.647, alternate fuel and 45 minute reserve fuel must be included in the minimum fuel calculation. IMPORTANT NOTE UPDATE: the video I created has correct information in it. So with the above as background, 1) yes. (14 CFR) parts 91 subpart K (part 91K), 121, 125 (including the Letter of Deviation Authority (LODA) 125 operators), and 135. 3) Use LNAV 800/2. (1) The ceiling will be at least 2,000 feet above the airport elevation; and. (b) An alternate airport need not be designated for IFR or over-the-top operations where the aircraft carries enough fuel to meet the requirements of 121.643 and 121.645 for flights (a) No person may dispatch an airplane under IFR or over-the-top unless he lists at least one alternate airport for each ( b) An alternate airport need not be designated for IFR or over-the-top operations where the aircraft carries enough fuel to meet the requirements of 121.643 and 121.645 for flights approach at an alternate airport when there is no other type of approach available. For alternate airport landing distance requirements, part 91 subpart K remains at 60 percent, while part 135 allows for 70 percent of the effective runway length.
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