As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APPROXIMATELY 1430 (UTC), FLT 7926 IAD-ABE. THE AIRCRAFT WAS EN ROUTE TO ABE WHEN THE CREW OBSERVED THE RIGHT FIRE DETECT FAIL INDICATION, FOLLOWED BY THE RIGHT FIRE WARNING. CREW FOLLOWED QRH PROCEDURES. BOTH EXTINGUISHERS WERE USED. THE ENGINE WAS SHUTDOWN IN FLIGHT.