As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ACFT AT FL280 RT ENGINE THROTTLE BECAME TOTALLY UNRESPONSIVE. ENGINE WENT TO IDLE AND THROTTLE POSITION HAD NO AFFECT. QRH REFERENCED. EMERGENCY DECLARED. TROUBLESHOT AND REPLACED THE FUEL CONTROL IAW AMM 73-21, LEAK AND OPS CHECKED GOOD.