As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RT ENGINE ROLLED BACK AFTER TAKEOFF, ABOUT 20 PERCENT. SWITCHED DAU NR 1 TO CHANNEL B AND ENGINE OK. TROUBLESHOOTING REVEALED A FAULTY NR 2 EEC (ELECTRONIC ENGINE CONTROLLER). INSTALLED A SERVICE EEC IAW MFG MM AND PERFORMED ENGINE OPERATIONAL CHECKS. ALL PARAMETERS NORMAL. AIRCRAFT WAS RETURNED TO SERVICE.