"John Galban" wrote in message om...

Lack of a mag drop would indicate that the P-lead to the mag switch
is not grounding properly.

Or that the magnetos are mistimed..

This means the mag is always hot. I would
not only park the plane, but I'd attach a note to the prop, warning
others that the prop could be hot.

The prop could be hot even if both mags have a mag drop. Switches
have been known to stay hot in OFF when they worked normally in
L & R.