Shouldn't. The output of autopilot DGs that heading bugs is
fairly standard. It's a transformer that has a null in its output
when the bug is under the lubber line.

Bill Hale.

How "particular" to an AP are DGs?


We're looking to replace a DG in an aircraft that has an [original]
Cessna
Navomatic 300A (I think it is called) autopilot. In the not too
distant
future, we'll be upgrading the AP (probably to an STEC unit, likely to
the
STEC 20 (we already have the STEC 30 Alt installed)).


Would we need a new DG when we upgrade the AP?


- Andrew