Slave on HSI acting strange

[conom06d]

I have no idea what would cause it but some of you all may actually know what would cause it. I always have a HDG flag so i know it is not working right but it stays consistantly 30 degrees off of correct heading. If I unslave the HSI and align the heading to mag compass it will hold it accurately until I turn the plane off. In other words it does not precess. But if i press the slave button in it will go back to aligning with the incorrect 30* off heading. Any ideas?

[carusoam]

Conom06d,

"Fortunately" There is a thread for this already.  You will be looking for plugs undo / redo or service the magnetometer....or leave the system unslaved....

http://www.mooneyspace.com/index.cfm?mainaction=posts&forumid=3&threadid=1164

Best regards,

-a-

 

 

[conom06d]

Oh thanks for the direction. Yeah i dont normally check the modern mooney sections as im in a '61 but most of my avionics would pass for a newer panel

[Royski]

Suggest you contact Bob Bramble at Aerolab - very experienced with these units and good prices.

http://www.aerolabaviation.com/