Would we use a different method to determine if the takeoff alternate or second alternate weather is legal? Subpart U--Dispatching and Flight Release Rules. 121.745 Minimum age. The take-off alternate aerodrome should have weather conditions and facilities suitable for landing the aeroplane in normal and non-normal configurations pertinent to the operation. In a rock-paper-scissors sort of way, you'll need to consider a variety of possible takeoff minimums. § 121.621 Alternate airport for destination: Flag operations § 121.623 Alternate airport for destination: IFR or over-the-top: Supplemental operations § 121.624 ETOPS Alternate Airports § 121.625 Alternate Airport weather minima § 121.627 Continuing flight in unsafe conditions § 121.628 Inoperable instruments and equipment 1 Navaid: add 400 feet to MDA or DH and 1 SM to the landing minimum. At the alternate airport, pilots may plan for applicable alternate airport weather minimums using: 1. In determining alternate airport weather minimums, the certificate holder must not use any published IAP which specifies that alternate airport weather minimums are not authorized. 121.625. Part 121 of the federal aviation regulations (FARs) pertains to the operation of scheduled air carriers. Yes the forecast weather for the alternate airport must be above minimums. (b) No person may allow a flight to continue to an airport to which it has been dispatched or released unless the weather conditions at an alternate airport that was specified in the dispatch or flight release are forecast to be at or above the alternate minimums specified in the operations specifications for that airport at the time the . 121.300 Airborne weather radar equipment. This does not mean that the operator has to have an approval to operate according to JAR OPS 1. 121.625. LVP means Low . Part 121 and Part 135 certificate holders have the ability, through the use of approved OpSpecs, to use lower-thanstandard takeoff minimums. Approach Lighting conditions and additional requirements. Policy change expands IFR alternate-airport choices. § 121.625 - Alternate Airport weather minima. Sec. (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, no person may dispatch or release an aircraft from that airport unless the dispatch or flight release . When standard takeoff minimums or greater are used, the Touchdown Zone RVR report, if available, is controlling. If, for the alternate airport, an instrument approach procedure has been published in part 97 of this chapter or a special instrument approach procedure has been issued by the FAA to the certificate holder, the ceiling is 200 feet . Part 135 •Subpart D—VFR/IFR Operating Limitations and Weather Requirements -§135.201 Applicability. always follow your standard alternate minimum criteria. C55 Alternate airport IFR weather minimums C56 IFR takeoff minimums , part 121 operations - all airports C57 IFR takeoff minimums , part 135 operations - all airports . (b) No pilot may take off from an alternate airport unless the weather conditions are at least equal to the minimums prescribed in the certificate holder's operations specifications for alternate airports. Learning more about these other minimums can help Part 91 pilots to create and commit to our own personal takeoff minimums. Sec. § 121.625: Alternate Airport weather minima. (iv) The threshold lights. Alternate airport weather minimums. Derived alternate mins are in lieu of the standard alternate mins mentioned above. There is no requirement for aircraft operating under Part 91 to have a takeoff alternate. A second alternate is required ( FAR 121.619) when the weather conditions forecast for the destination and first alternate are "marginal". Planning minima for a take-off alternate aerodrome. To help preclude that unhappy state we have weather minimums that need to be met. More precisely, it must be well above minimums, and have an instrument approach. 121.625. -§135.211 VFR: Over-the-top carrying passengers: Operating . • The sample OpSpec H105 template in Appendix B applies to part 121/135. VFR flight is based on the principle of "see and avoid." The presumption made in establishing the basic VFR weather . § 121.659: . According to FAR 135.223: You are not able to fly in IFR conditions unless your aircraft carries enough fuel (taking into account weather reports, forecasts, and conditions) to: Land at your intended airport; Fly from that . . (b) the aerodrome is an isolated destination aerodrome; and. 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, or any combination thereof, indicate that the weather conditions will be at or above the alternate weather minima specified in the certificate holder's operations specifications for that airport when . If a feeder route to an Instrument Approach Fix (IAF) begins at a fix, located along the route of flight prior to reaching the holding fix, and clearance for . When a takeoff minimum is not published, the certificate holder [Flight Express] may use the applicable standard takeoff minimum and any lower than standard takeoff minimums authorized by these operations specifications. 121.625. [Except as provided in Sec. An operator shall only select an aerodrome as a take-off alternate aerodrome when the appropriate weather reports or forecasts or any combination thereof indicate that, during a period commencing one hour before and ending one hour after the estimated time of arrival at the aerodrome, the weather conditions will be at or above the applicable . The MDA or DA/DH and visibility minimums need not be increased above those applicable to the airport when used as an alternate airport, but in no event may the landing minimums be less than 300 and 1. . For safety, some airports have non-standard alternate minimums that supersede these requirements. Appendix A. Part 121 OPERATING REQUIREMENTS: DOMESTIC, FLAG, AND SUPPLEMENTAL OPERATIONS. . Section 135.217 of the FARs states, "No person may take off an aircraft under IFR from an airport where weather conditions are at or above takeoff minimums but are below authorized IFR landing minimums unless there is an alternate airport within one hour's flying time (at normal cruising speed, in still . used in operations beyond autorotational distance from the shoreline be equipped with a 406 MHz locator beacon with a 121.5 MHz homing capability and that passengers . 121.617. Sample OpSpec Paragraph C055, Alternate Airport IFR Weather Minimums: 14 CFR Part 121 a. (iii) The threshold markings. Subpart U--Dispatching and Flight Release Rules. 121.617. Sec. Once the flight is under way, conditions The formula will produce mins higher than basic approach mins. 121-253, 61 FR 2615, Jan. 26, 1996] (ii) The threshold. b. FAA Order 8900.1. . 2 Navaid: add 200 feet to MDA or DA of the higher of the two approaches and 1/2 SM to the higher of the 2. [Doc. Not so for Part 121 and 135 operators. 2. § 121.617 Alternate airport for departure. For a non-precision approach, the minimums are an 800-foot ceiling and 2 SM visibility. Lateral navigation (LNAV) or circling minimum descent altitude (MDA); 121.617 Alternate airport for departure. In other words, those minimums do not apply to operations under Part 91. 0 . Another way that runway markings could affect us are straight-in landings. Is the weather above approach minimums for that airport? No. For FAR Part 121 operations by airplanes with three or more engines, these new ETOPS rules will apply on routes that are at some point more than 180 min from an alternate airport. Parts 121 and 135 carriers are required to designate a place to go in an emergency when origin weather is low, but for Part 91 it's . April 11, 2013 By Dan Namowitz. Part 121 of the Civil Aviation Safety Regulations 1998 (CASR) will set the minimum acceptable standards applicable to larger aeroplanes that are conducting air transport operations. (135.217, 121.617) The "TAKEOFF ALTERNATE" airport must have weather at or above IFR landing minimums. of a weather forecast indicate that destination and/or alternate airport weather could be below required minimums at the destination or first alternate airport, provided the main body of the . Our company defines marginal as: destination - visibility at minimums for the expected approach; alternate - visibility and ceiling at the alternate minimums listed in the Operation Specifications (Ops Specs . Part 121, Part 125, Part 129, and Part 135 Minimums. Part 135 IFR Fuel Requirements. (a) If the pilot in command of an airplane has not served 100 hours as pilot in command in operations under this part in the type of airplane he is operating, the MDA or DA/DH and visibility landing minimums in the certificate holder's operations specification for regular . The deferral applies to certain operators only and is subject to conditions set out in CASA EX83/21. Weather forecasts for the planned route and any alternate * . Part 135 applies to commuter and on-demand operations, like corporate, and charter flights. which do not have RVR alternate airport within runway. . It is designed as a technical reference for all pilots who operate under instrument flight rules (IFR) in the National Airspace System (NAS). . Part 121 and Part 135 certificate holders have the ability, through the use of approved OpSpecs, to use lower-thanstandard takeoff minimums. If a usable precision approach is available: 600' ceilings AND 2 SM of visibility. For our operations (and I believe this holds true pretty much across the board with US carriers), we are required to have an alternate (for domestic ops) if the landing airport's weather is forecasted to have visibility below 3 statue miles, and/or ceiling below 2000 ft AFE at anytime from 1 hour before to 1 after your proposed time of arrival . § 121.652 - Landing weather minimums: IFR: All certificate holders. Applicability of reported weather minimums. The take-off alternate aerodrome should have weather conditions and facilities suitable for landing the aeroplane in normal and non-normal configurations pertinent to the operation. Appendix A to Part 121 - First Aid Kits and Emergency Medical Kits; Appendix B to Part 121 - Airplane Flight Recorder Specification; Appendix C to Part 121 - C-46 Nontransport Category Airplanes; Appendix D to Part 121 - Criteria for Demonstration of Emergency Evacuation Procedures Under §121.291; Appendix E to Part 121 - Flight Training . CANCELATION: Staff Instruction Number SI (O) 120-03 Amdt. Standard alternate minimums require the forecasted conditions at the time of arrival be at least 2 miles visibility and at or above 600 foot ceilings for precision approaches, or 800 foot ceilings for non-precision approaches. There are several requirements for listing a takeoff alternate. Sec. Landing Minimums. If only a non-precision approach is useable: 800' AND 2 SM of . • Revises alternate airport weather minimums for rotorcraft in § 135.221. . 3. No. (2) The operator and the pilot in command of an aeroplane for a flight each contravene . [For the sake of this discussion the example under consideration is a passenger carrying Part 121 flight {Part 91 and flight into uncontrolled airspace is ignored.} Per 14 CFR 91.175 f (2), standard minimums are: 1sm (or 5000 RVR) visibility for a/c with 1-2 engines and ½ sm (2400 RVR) for aircraft with more than two engines. -§135.207 VFR: Helicopter surface reference requirements. 121-33, 32 FR 13912, Oct. 6, 1967; Amdt. or portion of a curriculum segment under SFAR No. This section identifies the Part 121 requirement that is deferred until 4 December 2023 that relates to minimum equipment lists. Compliance schedule for operators that transition to part 121; certain new entrant operators. This blanket regulation applies to all Part 121 operators unless additional . VFR Weather Minimums The basic VFR weather minimums (14 CFR 91.155) are specific to types of airspace and altitudes. At the airlines I have been at, ALT min calculations worked the same for both T/O and DEST alternates. 58 of 14 CFR part 121, and each person employed or used by an air carrier or commercial operator under this part . regional and major airlines) . (Part 121 alternate aerodromes) requirements). § 121.627: Continuing flight in unsafe conditions. For aircraft, other than helicopters, having 2 engines or less - 1 SM visibility. . § 121.627 - Continuing flight in unsafe conditions. > instrument flight rules - what are & quot ; crewmember training qualification. Pilot in command of an aeroplane for a non-precision alternate weather minimums part 121, the Touchdown Zone RVR,!, we need to reliably dispatch so the transportation industry doesnt come to a halt when low. 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