As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UNABLE TO START NR 1 ENGINE NR 1 START VALVE OPEN LIGHT CAME ON, NO ENGINE ROTATION. ACFT GROUNDED. UPON FURTHER INVESTIGATION FOUND LT STARTER SHAFT SHEARED. REPLACED DEFECTIVE STARTER, REF AMM 80-11-01. SERVICE STARTER OIL FULL. ACFT GROUND VERIFICATION CHECK SUCCESSFUL.