>Okay, regulator was faulty. At the same time, this doesn't explain the engine cuts as the mags >are on a separate circuit from battery and Alternator (which is as it should be).
no mags according to SRD -
>Car type ignition system on the Jab (although there are two of them). Not mags.
Inoperative regulator = no charge to battery
Electronic ignition fed by a discharging battery wouldn't last forever and would likely misfire before stopping completely. If the battery was rested or got warmer it might recover enough to start/run from a windmilling prop situation.