As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) PILOTS REPORTED ENGINE BECAME NON RESPONSIVE TO PLA INPUT DURING TAXI. THE COMPRESSOR SPEED (NG) ROLLED BACK ALL THE WAY DOWN TO 42 PERCENT. DURING THE ON GROUND TROUBLESHOOTING, THE PROBLEM WAS RESOLVED WHEN PLA LINES WERE REPLACED. THE ACFT RETURNED IN SERVICE.