You would use the TC or TB to control bank angle, it is the
instrument that you control, therefore primary. You monitor
the compass to fly a heading which is the desired result.
Using the compass as a control instrument generally requires
a south heading so that the compass turning error is in the
correct direction.


--
James H. Macklin
ATP,CFI,A&P

"Greg" wrote in message
ups.com...
| In primary and supporting method of attitude instrument
flying, which
| do you consider the primary instrument for bank in the
partial panel
| situation (loss of both attitude indicator and heading
indicator)?
| Turn coordinator or magnetic compass?
| thank you
| Greg
| greggordon.org/flying
|