As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS RIGHT ENGINE ROLLED BACK TO IDLE WHILE SLOWING TO .74 MACH AT FL360.ENGINE HEAT WAS TURNED ON ALONG WITH RH FUEL HEAT.(-4) ENGINE REMAINED AT IDLE WITH NORMAL INDICATIONS FOR 20 MIN. EMERGENCY DECLARED. LANDED UNEVENTFULLY. MAINTENANCE REMOVED AND REPLACED THE ENGINE FUEL PUMP IAW AMM 73-12-01. OPS CHECK GOOD.