As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORT: L ENG STARTER APPEARS TO HAVE SHEARED. SAMC TEXT: GRD CREW REPORTS SPARKS FROM UNDER ENG START VLV CONFIRMED OPENING BUT STARTER NOT TURNING. REPLACE STARTER AND START VLV PER MM. CO MECH REPLACED STARTER PER MM AND START VALVE PER MM. MOTOR OF ENG WAS NORMAL. COWLING SECURED.