PITOT-STATIC HEATER FAILURE (LH OR RH P/S HTR OFF, CAUTION LIGHT ON AND MASTER CAUTION)
1. Pitot-Static Switch and Circuit Breakers - CHECK.
2. Determine Inoperative System.
NOTE
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The altitude hold, altitude select, vertical speed hold, and indicated airspeed hold functions may be inoperative if the pilot's or copilot's pitot-static system fails. The autopilot can reference the pilot's or copilot's pitot-static system. Therefore, u