§ 91.157
§ 91.157 Special VFR weather minimums. (a) Except as provided in appendix D, section 3, of this part, special VFR operations may be conducted under the weather minimums and requirements of this section, instead of those contained in § 91.155, below 10,000 feet MSL within the airspace contained by the upward extension of the lateral boundaries of the controlled airspace designated to the surface for an airport. (b) Special VFR operations may only be conducted - (1) With an ATC clearance; (2) Clear of clouds; (3) Except for helicopters, when flight visibility is at least 1 statute mile; and (4) Except for helicopters, between sunrise and sunset (or in Alaska, when the sun is 6 degrees or less below the horizon) unless - (i) The person being granted the ATC clearance meets the applicable requirements for instrument flight under part 61 of this chapter; and (ii) The aircraft is equipped as required in § 91.205(d). (c) No person may take off or land an aircraft (other than a helicopter) under special VFR - (1) Unless ground visibility is at least 1 statute mile; or (2) If ground visibility is not reported, unless flight visibility is at least 1 statute mile. For the purposes of this paragraph, the term flight visibility includes the visibility from the cockpit of an aircraft in takeoff position if: (i) The flight is conducted under this part 91; and (ii) The airport at which the aircraft is located is a satellite airport that does not have weather reporting capabilities.
§ 1.1
Show, unless the context otherwise requires, means to show to the satisfaction of the Administrator. Small aircraft means aircraft of 12,500 pounds or less, maximum certificated takeoff weight. Small unmanned aircraft means an unmanned aircraft weighing less than 55 pounds on takeoff, including everything that is on board or otherwise attached to the aircraft. Small unmanned aircraft system (small UAS) means a small unmanned aircraft and its associated elements (including communication links and the components that control the small unmanned aircraft) that are required for the safe and efficient operation of the small unmanned aircraft in the national airspace system. Special VFR conditions mean meteorological conditions that are less than those required for basic VFR flight in controlled airspace and in which some aircraft are permitted flight under visual flight rules. Special VFR operations means aircraft operating in accordance with clearances within controlled airspace in meteorological conditions less than the basic VFR weather minima. Such operations must be requested by the pilot and approved by ATC. Standard atmosphere means the atmosphere defined in U.S. Standard Atmosphere, 1962 (Geopotential altitude tables). Stopway means an area beyond the takeoff runway, no less wide than the runway and centered upon the extended centerline of the runway, able to support the airplane during an aborted takeoff, without causing structural damage to the airplane, and designated by the airport authorities for use in decelerating the airplane during an aborted takeoff. Suitable RNAV system is an RNAV system that meets the required performance established for a type of operation, e.g.
§ 135.93
VFR weather conditions in § 91.155 of this chapter; and (B) The autopilot is coupled and receiving both lateral and vertical path references; or (iv) A greater altitude specified by the Administrator.
§ 121.579
VFR weather conditions in § 91.155 of this chapter; and (B) The autopilot is coupled and receiving both lateral and vertical path references; or (iv) A greater altitude specified by the Administrator.
§ 125.329
VFR weather conditions in § 91.155 of this chapter; and (B) The autopilot is coupled and receiving both lateral and vertical path references; or (iv) A greater altitude specified by the Administrator.