Federal Aviation Regulations
Sec. 121.342 — Pitot heat indication systems.
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]
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