John, thanks for the "heads-up" on the mag shut down test. I am now convinced that I have intermittent grounding problem. I could not replicate the problem today that was a solid problem yesterday. It must be a loose wire somewhere. Both handheld and cockpit radios performed well (both with a little engine noise) but didn't get to a garbled state. I ran the engine for nearly thirty minutes at various RPM and still could not repeat the problem.
I will do an inspection of the engine next to look at grounding connections. Thanks. Frank Nelson N51DV - 415C TOA --- In [email protected], "John Cooper" <j...@...> wrote: > > One thing that is oft overlooked is the shielding on the P leads. Those > shields must be grounded at the mag switch and the mag switch to the > airframe. > > If you shut the mags off at 2000 RPM, do not turn them back on while the > engine is still spinning [fast] as the exhaust will be full of gas fumes and > you can blow it clean off the airplane. You can purge the fumes by spinning > the engine (mags off) slowly with the throttle wide open. > > John Cooper > Skyport Services > www.skyportservices.net >
