As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB IN THE MID TO HIGH TEENS, OBSERVED LOUD BANG FROM THE LEFT ENGINE. ENGINE ROLLED BACK AND TGT REMAINED STEADY BUT ROSE TO 974 DURING CALLING CHECK LIST. EMERGENCY RETURN TO PBI, LANDING NORMAL. NR 1 (LEFT) ENG HAS BEEN REMOVED AND REPLACED IAW TC 603 REF SP 8140.2, ALL LEAK OPS AND RTS PASS (NORMAL).