As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DESCENT, TURNED ON ENGINE ANTI-ICE AND APPROXIMATELY TWO MINUTES LATER GOT ENGINE NUMBER TWO FIRE WARNING. SHUT DOWN NUMBER TWO ENGINE AND BLEW BOTH FIRE BOTTLES. FOUND NUMBER TWO COWL ANTI-ICE VALVE LEAKING. REMOVED AND REPLACED NUMBER TWO COWL ANTI-ICE VALVE AND BOTH ENGINE FIRE BOTTLES AND SQUIBS.