As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMBOUT AT APPROX 400 AGL, LOUD BANGING WAS HEARD FROM THE LEFT ENGINE, FOLLOWED BY TORQUE FLUX, IGN LIGHT AND AN AUTOCOARSEN EVENT. NO ENGINE PARAMETERS WERE EXCEEDED. CREW SHUT DOWN ENGINE IN FLIGHT. REMOVED AND REPLACED THE ANTI ICE START BLEED VALVE.