As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 691 ON ATTEMPTING TO START #1 ENGINE, WITH ENGINE START SELECTOR IN GND, #1 ENGINE DID NOT SHOW ANY N2 ROTATION. TUG DRIVER OBSERVED SPARKS AND FLAMES ERUPTING FROM BOTTOM OF ENGINE COWL. SLECTED AUTO AND FLAMES EXTINGUISHED. CORRECTIVE ACTION: R/R NBR1 ENG. STARTER REF B757-200 AMM 80-11. OPS CKS GOOD. (4193054)