Mailing List lml@lancaironline.net Message #33148
From: <Sky2high@aol.com>
Sender: <marv@lancaironline.net>
Subject: Re: [LML] Dead landing gear
Date: Fri, 02 Dec 2005 19:03:10 -0500
To: <lml@lancaironline.net>
In a message dated 12/2/2005 5:17:41 P.M. Central Standard Time, n103md@yahoo.com writes:
maybe I'm a bit confused, but isn't the purpose of the

squat switch to prevent activation of the landing gear

retraction while the airplane is on the ground? I
would
expect the gear to operate normally when on the jacks
--
just as it would in the air.
N103MD,
 
Most Lancairs use an air speed activated "squat" switch - i.e. The gear cannot be retracted below about 70 KIAS.  Thus, the gear up switch power has to pass thru normally open pressure switch (connected to pitot/static) contacts before it gets to the normally closed hydraulic pressure switch contacts and thence to the up motor power relay.
 
Scott Krueger AKA Grayhawk
Lancair N92EX IO320 SB 89/96
Aurora, IL (KARR)



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