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Thread: Altimeter problem. Thoughts

  1. #1
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    Default Altimeter problem. Thoughts

    Went to do some ski flying today from FBKS and I always set my altimeter to ground elevation 440ft. Turning the dial to do so it stopped at 1,900ft. I would turn the other direction all day long but stopped before I could get to correct elevation. So I flew it and my airspeed and VSI both worked fine as did the altimeter but at wrong elevation. It was reacting to the flight. So I was thinking my static port on side of plane. C170B. Now I'm understanding that if that static port is plugged the altimeter will stick and not respond at all.

    Thoughts?
    Hope this makes sense. Long weekend.
    Thanks,

    GS

  2. #2
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    Your altimeter is broke... Plugged static has nothing to do with setting the barometer.

  3. #3
    Member Float Pilot's Avatar
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    1. Was your Kollsman Window Altimeter Barometric Pressure Setting showing you within 75 ft of actual elevation when properly set?
    2. Did your altimeter make sudden needle jumps when changing altitude?
    3. Have you experienced fogging inside any of your instruments?
    Floatplane,Tailwheel and Firearms Instructor- Dragonfly Aero
    Experimental Hand-Loader, NRA Life Member
    http://site.dragonflyaero.com

  4. #4
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    [QUOTE=Float Pilot;1444978]1. Was your Kollsman Window Altimeter Barometric Pressure Setting showing you within 75 ft of actual elevation when properly set?
    2. Did your altimeter make sudden needle jumps when changing altitude?
    3. Have you experienced fogging inside any of your instruments?[/QUOTE


    i couldn't get close to actual altitude. Dial would stop. In flight gauge responded normal
    no fogging inside

    this was first time flight since weather change to winter

    maybe it's the dial

  5. #5
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    If the fit every hits the Shan, your altimeter will really be a primary instrument. Change it out !!!

  6. #6

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    It might be the gear mechanism on the other end of your adjustment knob.
    See this a lot on other instruments that are frequently adjusted manually with a twist knob.

  7. #7
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    You can safely fly without the artificial horizon, radios, VORs and a wealth of other items, including glass panels. Without a PRIMARY PANEL you're instantly on very thin ice. I still say that evaluating and guessing is a dangerous and wasteful exercise. Change it out !!! You can find the problem AFTER it's been changed out, and if possible save it for future use.

  8. #8
    Member Float Pilot's Avatar
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    91.205(b) (VFR Day Instrument Requirements)

    A airspeed indicator
    T tachometer (for each engine)
    O oil pressure gauge (for each engine using a pressure system)
    M manifold pressure gauge (for each altitude engine)
    A altimeter
    T temperature gauge (for each liquid cooled engine)
    O oil temperature gauge (for each air cooled engine)
    F fuel gauge
    L landing gear position indicator
    A anti collision lights (for aircraft certified after March 11th 1996)
    M magnetic compass
    E ELT
    S safety belts

    Just find a yellow tagged altimeter and swap it out...
    Floatplane,Tailwheel and Firearms Instructor- Dragonfly Aero
    Experimental Hand-Loader, NRA Life Member
    http://site.dragonflyaero.com

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