As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE SURGES WITH ANY POWER OTHER THAN IDLE. ALSO, WITH ENG ANTI-ICE ON IT SURGES AT IDLE WITH ENG ANTI-ICE ON. IAW FIM TEST 71-06-00-815-803-R-00 CHECKED P1 & P4 TUBES, IP/ HP SOLENOID PHYSICAL COND. PF RAKES FOUND NO ABNORM PERFORMED TEST NR 3 IAW 71-00-00-715-049-R033 IP/HP COMPRESSOR AIR FLOW CONT TEST NO PROB FOUND. R & R NR 2 ENG TPU AS PRECAUTION. PERFORMED TEST NR 13 TAKEOFF POWER TEST& PWR SETTINGS NO FLUCTUATION NOTED.