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~Craig~

Probe Heat Failure (loss of ASI) - Fix

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Hi,

 

Apologies if this fix is already covered somewhere else.  I couldn't find it.

If you fly anywhere reasonably cold in the PC12, you will probably find that your Airspeed Indicator will fail / freeze, and show an airspeed of zero - even though you have the PROBE heat button on.....

 

I just flew the length of Finland and my Probe Heat / ASI failed on climbout and never returned, for the whole 2.5hr flight.  :(

 

So to fix this, more juice (electrical power) is needed by the Probe Heat system.

 

Go to your Aircraft.cfg and go to the [Electrical] entries, and change;-

 

[Electrical]

pitot_heat         = 0, 2 , 17.0

 

to

 

[Electrical]

pitot_heat         = 0, 5 , 17.0

 

I've tested this and the Probe Heat was working fine; even in very cold temps.

 

Cheers.

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