What was found
ENGINE WON'T CRANK WITH BATTERY POWER BOX. BOX TESTS WHEN EVER MASTER BATTERY SWITCH IS ENERGIZED. REPLACED WITH SERVICEABLE UNIT.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
ENGINE WON'T CRANK WITH BATTERY POWER BOX. BOX TESTS WHEN EVER MASTER BATTERY SWITCH IS ENERGIZED. REPLACED WITH SERVICEABLE UNIT.