As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT FUEL BYPASS ANNUNCIATOR (AMBER) ILLUMINATED ON TAKEOFF ROLL. REMOVED AND REPLACED LT FUEL FILTER AND O-RING'S IAW PWA MM 545A MAINTENANCE MANUAL. RAN A/C LEAK CHECK GOOD FUEL BYPASS AMBER LIGHT DID NOT ILLUMINATE (P/N C31J2404-0R11CA) ASSOCIATED O-RINGS IAW 73-10-05.