{"data":{"id":"us/14-cfr-121.305","jurisdiction":"us","citation":"14 CFR 121.305","heading":"Flight and navigational equipment.","body":"No person may operate an airplane unless it is equipped with the following flight and navigational instruments and equipment:\n(a) An airspeed indicating system with heated pitot tube or equivalent means for preventing malfunctioning due to icing.\n(b) A sensitive altimeter.\n(c) A sweep-second hand clock (or approved equivalent).\n(d) A free-air temperature indicator.\n(e) A gyroscopic bank and pitch indicator (artificial horizon).\n(f) A gyroscopic rate-of-turn indicator combined with an integral slip-skid indicator (turn-and-bank indicator) except that only a slip-skid indicator is required when a third attitude instrument system usable through flight attitudes of 360° of pitch and roll is installed in accordance with paragraph (k) of this section.\n(g) A gyroscopic direction indicator (directional gyro or equivalent).\n(h) A magnetic compass.\n(i) A vertical speed indicator (rate-of-climb indicator).\n(j) On the airplane described in this paragraph, in addition to two gyroscopic bank and pitch indicators (artificial horizons) for use at the pilot stations, a third such instrument is installed in accordance with paragraph (k) of this section:\n(1) On each turbojet powered airplane.\n(2) On each turbopropeller powered airplane having a passenger-seat configuration of more than 30 seats, excluding each crewmember seat, or a payload capacity of more than 7,500 pounds.\n(3) On each turbopropeller powered airplane having a passenger-seat configuration of 30 seats or fewer, excluding each crewmember seat, and a payload capacity of 7,500 pounds or less that is manufactured on or after March 20, 1997.\n(4) After December 20, 2010, on each turbopropeller powered airplane having a passenger seat configuration of 10-30 seats and a payload capacity of 7,500 pounds or less that was manufactured before March 20, 1997.\n(k) When required by paragraph (j) of this section, a third gyroscopic bank-and-pitch indicator (artificial horizon) that:\n(1) Is powered from a source independent of the electrical generating system;\n(2) Continues reliable operation for a minimum of 30 minutes after total failure of the electrical generating system;\n(3) Operates independently of any other attitude indicating system;\n(4) Is operative without selection after total failure of the electrical generating system;\n(5) Is located on the instrument panel in a position acceptable to the Administrator that will make it plainly visible to and usable by each pilot at his or her station; and\n(6) Is appropriately lighted during all phases of operation.","path":["Title 14—Aeronautics and Space","CHAPTER I—FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION","SUBCHAPTER G—AIR CARRIERS AND OPERATORS FOR COMPENSATION OR HIRE: CERTIFICATION AND OPERATIONS","PART 121—OPERATING REQUIREMENTS: DOMESTIC, FLAG, AND SUPPLEMENTAL OPERATIONS","Subpart K—Instrument and Equipment Requirements"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-14.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:20Z","sha256":"068f8fba1e9392972864434ac4f00897257d0a9b76c510887dad7cadfa2d8f6d","source_id":"us-cfr","stale":true,"prev":"us/14-cfr-121.303","next":"us/14-cfr-121.306"},"notice":"GroundRules: Original legal text. Not legal advice."}