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Tom -
The DFC-250 Tru Trak autopilot has a magnetic backup of some sort because the airborne calibration procedure calls for calibrating it to the 4 major compass points. The 250 is the forerunner to the Sorcerer
John
On Mon, 08 Oct 2007 09:46:15 -0400, Tom Gourley <tom.gourley@verizon.net> wrote:
Mike,
Which TruTrak autopilot do you have? I looked through the Sorcerer documentation and could find nothing on an internal magnetometer. I've also done a Sorcerer installation in a Legacy and don't recall anything about a magnetometer. TruTrak does have internal gyros. The Sorcerer operating manual states that if GPS data is lost the track function switches to bank; i.e. it uses its internal gyros to maintain bank. The autopilot function of the ADI Pilot also switches to a gyro backup mode if GPS data is lost.
Tom Gourley
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