As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED RT FIRE WARNING LIGHT FLICKERING WHEN POWER LEVER WAS PULLED BACK TO THE IDLE POSITION. NO SECONDARY INDICATIONS NOTED. FOUND EXHAUST CASE LEAKING AT A FLANGE BOSS. FURTHER INVESTIGATION AFTER REMOVAL OF THE EXHAUST CASE, FOUND SLIGHT TURBINE FOD ENGINE REMOVED FOR REPAIR AND REPLACED.