As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT GEN TRIPPED OFF START OF TAKEOFF. RAN CHECKLIST AND DID NOT RESET. REPLACED LT ENG GCU. RAN BOTH ENGINES, SYSTEM WORKED NORMAL. REPLACED LT GEN TIE BREAKER. BPCU BITE CHECK HAD LT GEN DP TRIP MAIN BUS-OVERLAP ZONE MSG TWICE. GCU WAS REPLACED ON THE FIRST W-UP.