As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - DURING CLIMBOUT WITH ENGINE PRESSURE RATIO AT 1.8 LEFT ENGINE POWER FELL OFF AND TEMPERATURE SPIKED. WHILE PERFORMING QHR PROCEDURE POWER SUDDENLY CAME BACK UP AND TEMPERATURE DROPPED TO NORMAL. FLIGHT RETURNED DFW LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED LEFT HAND ENGINE AT DFW ON 09/13/10. SYSTEM GROUND CHECK NORMAL OPERATION.