As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: ON TAXI OUT AA PILOT IN JET BEHIND US REPORTED FLAMES COMING FROM LEFT ENGINE. WE SHUT DOWN ENGINE AND TAXIED BACK IN. ACCOMP T/S IAW FIM 71-05-00 AND AMM 79-00-00. FOUND PTFE PARTICLES FWD SCAVENGE SUMP CHIP DET., WITHIN LIMITS AND ALL OPS OK FOR SVC.