14 C.F.R. § 121.342 Pitot heat indication systems.
Title 14 - Aeronautics and Space
No person may operate a transport category airplane or, after December 20, 1999, a nontransport category airplane type certificated after December 31, 1964, that is equipped with a flight instrument pitot heating system unless the airplane is also equipped with an operable pitot heat indication system that complies §25.1326 of this chapter in effect on April 12, 1978. [Doc. No. 28154, 60 FR 65932, Dec. 20, 1995]
Title 14: Aeronautics and Space
PART 121—OPERATING REQUIREMENTS: DOMESTIC, FLAG, AND SUPPLEMENTAL OPERATIONS
Subpart K—Instrument and Equipment Requirements
§ 121.342 Pitot heat indication systems.
