As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT: 4005 TPA/TPA DURING CLIMBOUT LOUD POP CAME FROM LEFT ENGINE FOLLOWED BY SMOKE COMING FROM PILOT AIR VENTS. SECURED AND SHUT DOWN LEFT ENGINE. NO PRIMARY OR SECONDARY INDICATION OF A FIRE. RETURNED TO TPA LANDED WITHOUT INCIDENT. REPLACED LEFT ENGINE.