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Altimeter Sudden Jump

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Hello all fellow 441 flyers.  Anyone else have an issue where your altimeter suddenly jumps up when passing FL190/FL200?  Around that range mine jumps a good 2 to 3 thousand feet.  GPS altitude doesn't change, only pressure.  I have to descend back down to FL170 before it will read correctly again.  Only does it in this aircraft.

Just checked mine.  Didn't see anything like that.  Pitot/Static heat maybe?

Just checked mine.  Didn't see anything like that.  Pitot/Static heat maybe?

In the USA and some other regions 18000ft is the transition altitude where you set your barometer from local pressure to 29.92 inHg.

Do you have something that automatically does this switch for you? A virtual co-pilot or something like that?

  • 3 weeks later...
  • Author

It was the pitot heat switch thx guys

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