Piper Flyer Association - Technical Know-how, Serious Fun read more

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    The Best Entry-Level Pipers

    Longtime Piper pilot and Piper twin owner Kristin Winter discusses the cream of the crop in entry-level Piper aircraft. (Photo: James Lawrence)

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    Short Wing Pipers

    Out of a poor economy came a series of aircraft that were better than expected. (Photo: Peter Lubig)

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    The Piper Navajo

    After initially feeling intimidated by the size of the Navajo, contributing editor Kristin Winter found that it really one of the easiest and most gentle aircraft she had flown. (Photo: Paul Bowen)

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  • ...nothing can replace the skill and confidence you get using spare training time to do weird things.

    Kevin Garrison
  • The P210 is the most reasonably priced pressurized General Aviation airplane in the fleet.

    Steve Ells
  • It costs fuel to carry fuel in any airplane...

    Thomas Block
  • All of the PA-28-180/181 aircraft are great airplanes.

    Kristin Winter
  • My happy place is metal and T-shaped and smells like 100 octane

    Kevin Garrison


STEVE ELLS replied to the topic 'Arrow: Automatic Landing Gear Extension is Breaking My Plane' in the forum. 5 hours 6 minutes ago

The service manual has a test to determine if the auto land system is operable.
The auto land system has it's own "airspeed" mast so that system has to be checked too.
I'm not super familiar with the system so I can't really advise on the adjustments; it appears that all adjustments are external and that if the external adjustments are correct the unit itself has to be refurbed.
Since its Thanksgiving Day and I'm going to take off to my sister's in an hour, I don't have time to further research this until I return next week.
I suspect that if the auto land unit needs repair, your only option is to remove it, but again I'm not positive on this suspicion.
Happy Holidays


pfcastine replied to the topic 'Arrow: Automatic Landing Gear Extension is Breaking My Plane' in the forum. yesterday


Thanks again for your help. No, I haven't noticed anything unusual about the speed of the gear going up.

Trying to research why the gear would auto extend if (a) I'm not pushing the emergency down switch (which I understand is a different emergency system from the auto-land or auto-extend system) or (b) the criteria for the auto-land system aren't being met.

Each time the gear has dropped uncommanded, the airspeed *could* have been below 105mph (auto extension speed per my POH). I say *could*, because I wasn't monitoring airspeed at the exact moment the gear fell. However, each time the gear has dropped uncommanded, I'm all but certain the power setting has been above the 14" that you mention above. I have never had an uncommanded drop during take off or climb out, which I normally do at max power and 95mph (Vy per my POH).

Do you know where I could find information about the circuit (or whatever it is) that tells the auto-land system that the power is above the criteria for auto-extension? I'm guessing this is the culprit for my uncommanded gear extension, as opposed to an airspeed issue (although Charlie is checking the pitot system as well).

Again, thanks for your valuable help.