As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(LOG 5021672) TAXIING OUT AFTER NORMAL ENGINE START WENT TO TRANSFER POWER AND LEFT ENGINE UN-COMMANDED SHUT DOWN. REMOVED AND REPLACED LEFT ENGINE FUEL PUMP AND HMU PER B737 AMM 73-11-01. MCC REQ LT SPAR VALVE ACTUATOR REPLACED ON LOG 5021674.