Stall Vane and Static Port Heat on Known Ice Aircraft

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  • #83429

    The pilots Information Manual speaks of a separate stall vane and fuel vent heat switch which is not on my aircraft, T310R1591. There is a circuit breaker labeled as such, but no switch. How can I verify that my static ports and stall vane heat are indeed working?

    Thank you so very much for your attention.

    #94597
    cochrane
    Participant

      You can turn them on and go out and touch them to confirm that they are working. They don’t reach the high temperature of a pitot heater. The stall vane on my aircraft does not get very warm – maybe 20 degrees above ambient. Be careful of the pitot tube temperature, though.

      I also suggest two other checks: 1) For each flight, prior to engine start, check and record the current draw with the switch on and off. Since you don’t have a separate stall vane / static vent switch it is probably tied to your pitot heat switch. I would check current draw with and without your stall vane /static vent breaker pulled. If you compare the present and past current values prior to flight it gives you a pretty good idea whether everything is working. 2) During each inspection ask your mechanic to measure and record the current draw for each individual heating element, including your pitot tube(s). I like to do that because it is a quantified confirmation of performance of each element and it provides trend data.

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