As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE STARTING LEFT ENGINE, MECHANIC REPORTED SPARKS AND FLAMES COMING FROM SIDES OF ENGINE COWLING. FOUND PNEUMATIC STARTER BROKEN. REMOVED AND REPLACED PNEUMATIC STARTER PER MM 80-11-01-4. PERFORMED DRY MOTOR PROCEDURES IAW AMM 71-00-00/201. FOUND NORMAL. NO LEAKS NOTED. A/C OK FOR SERVICE.