Section 91.123 14 CFR Ch. I (1-1-19 Edition) Lowest usable flight level Current altimeter setting 29.92 29.91 29.41 28.91 28.41 27.91 27.41 (or higher) ...................................................... through 29.42 ................................................ through 28.92 ................................................ through 28.42 ................................................ through 27.92 ................................................ through 27.42 ................................................ through 26.92 ................................................ 180 185 190 195 200 205 210 (c) To convert minimum altitude prescribed under SectionSection 91.119 and 91.177 to the minimum flight level, the pilot shall take the flight level equivalent of the minimum altitude in feet and add the appropriate number of feet specified below, according to the current reported altimeter setting: Adjustment factor Current altimeter setting kpayne on VMOFRWIN702 with $$_JOB 29.92 29.91 29.41 28.91 28.41 27.91 27.41 (or higher) ...................................................... through 29.42 ................................................ through 28.92 ................................................ through 28.42 ................................................ through 27.92 ................................................ through 27.42 ................................................ through 26.92 ................................................ tailed report of that emergency within 48 hours to the manager of that ATC facility, if requested by ATC. (e) Unless otherwise authorized by ATC, no person operating an aircraft may operate that aircraft according to any clearance or instruction that has been issued to the pilot of another aircraft for radar air traffic control purposes. (Approved by the Office of Management and Budget under control number 2120-0005) [Doc. No. 18834, 54 FR 34294, Aug. 18, 1989, as amended by Amdt. 91-227, 56 FR 65658, Dec. 17, 1991; Amdt. 91-244, 60 FR 50679, Sept. 29, 1995] Section 91.125 ATC light signals. ATC light signals have the meaning shown in the following table: None 500 1,000 1,500 2,000 2,500 3,000 Section 91.123 Compliance with ATC clearances and instructions. (a) When an ATC clearance has been obtained, no pilot in command may deviate from that clearance unless an amended clearance is obtained, an emergency exists, or the deviation is in response to a traffic alert and collision avoidance system resolution advisory. However, except in Class A airspace, a pilot may cancel an IFR flight plan if the operation is being conducted in VFR weather conditions. When a pilot is uncertain of an ATC clearance, that pilot shall immediately request clarification from ATC. (b) Except in an emergency, no person may operate an aircraft contrary to an ATC instruction in an area in which air traffic control is exercised. (c) Each pilot in command who, in an emergency, or in response to a traffic alert and collision avoidance system resolution advisory, deviates from an ATC clearance or instruction shall notify ATC of that deviation as soon as possible. (d) Each pilot in command who (though not deviating from a rule of this subpart) is given priority by ATC in an emergency, shall submit a de- Color and type of signal Meaning with respect to aircraft on the surface Meaning with respect to aircraft in flight Steady green ........ Flashing green ...... Cleared for takeoff Cleared to taxi ...... Steady red ............ Stop ...................... Flashing red .......... Taxi clear of runway in use. Return to starting point on airport. Exercise extreme caution. Cleared to land. Return for landing (to be followed by steady green at proper time). Give way to other aircraft and continue circling. Airport unsafe - do not land. Not applicable. Flashing white ...... Alternating red and green. Section 91.126 Operating on or in the vicinity of an airport in Class G airspace. (a) General. Unless otherwise authorized or required, each person operating an aircraft on or in the vicinity of an airport in a Class G airspace area must comply with the requirements of this section. (b) Direction of turns. When approaching to land at an airport without an operating control tower in Class G airspace - (1) Each pilot of an airplane must make all turns of that airplane to the left unless the airport displays approved light signals or visual markings indicating that turns should be made to the right, in which case the pilot must make all turns to the right; and (2) Each pilot of a helicopter or a powered parachute must avoid the flow of fixed-wing aircraft. 720 VerDate Sep<11>2014 16:30 Jun 25, 2019 Jkt 247047 PO 00000 Frm 00730 Fmt 8010 Exercise extreme caution. Sfmt 8010 Q:\14\14V2.TXT PC31