8900.1 Vol. 10 Ch 6 Sec 3

Verify that the indication system incorporates an amber light that is in clear view of a flightcrew and that is designed to alert the flightcrew if the pitot heating system is switched off, or the pitot heating system is switched on, and any pitot tube heating element is inoperative. Part 121, ยง 121.342 19 Required Powerplant Instruments. ................
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