As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6217 - PHX-FLG - ON PREPARATION FOR TAKEOFF, THE CREW APPLIED TAKEOFF POWER. THE LEFT ENGINE ONLY MADE 40 PERCENT POWER. THE CREW ABORTED THE TAKEOFF AND RETURNED TO THE GATE. MAINTENANCE REPLACED THE MFC. OPS CHECKED GOOD AND THE AIRCRAFT WAS RETURNED TO SERVICE. (M)