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Bouncing Altimeter

Comanche Instruments and Avionics

Last Post by ICS archives 2008-2018 5 years ago

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ICS archives 2008-2018

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Topic starter 03/05/2020 12:06 am

Bouncing Altimeter

by Timothy Quigley » Mon Dec 21, 2015 8:09 pm

My partner observed this on our altimeter yesterday while climbing out after takeoff. It settled down after 30 seconds or so and didn't happen again. Also didn't happen on a flight earlier in the day.

There was no issue on the VSI or on those same instruments on our Aspen display.

Someone suggested to me it could have been some water in the pitot system and not to worry about it.

Thoughts?

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Timothy Quigley

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Re: Bouncing Altimeter

by Charles Schefer » Tue Dec 22, 2015 9:54 pm

Water could be the culprit. Had that in a Cirrus the other day.... If that happens again try changing to alt static source and see if the problem goes away. But how is your aspen connected in to the static source? Presumably the same system but a different point in the line...

- Charles

Charles Schefer

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Re: Bouncing Altimeter

by Zach Grant L1011jock » Thu Jan 07, 2016 6:05 pm

Cold weather has a fine way of showing sticky instruments. Is this the first time flying in the cold this year by chance?

"Keep it above 5 feet and don't do nuthin dumb!"

Zach Grant L1011jock: Technical Advisor; Posts: 1404; Joined: Mon Mar 22, 2004 4:35 pm; Location: Indianapolis KEYE

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