Peter Clark wrote:
As long as he's still squawking the code, I would think turn around
and land at nearest suitable field (squawk 7600 for a minute or two
and then go back to assigned code?) should work to remain within the
limits of both requirements. Course, I wouldn't turn *toward* the
city or FRZ, but if there's an airfield right near me?

If you squawk 7600, you should remain on the frequency and not change
back to the original code. Same for 7700 and 7500. I think the
changing back to the original code was the SOP from years ago.

Gerald