As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PIT FLIGHT#3077 THE CREW REPORTED A FIRE WARNING ON THE #1 ENGINE AFTER TAKEOFF. THE TORQUE ALSO BEGIN TO DROP TO 50% ALONG WITH THE ITT BEGAN TO RISE TO 810.THE AIRCRAFT RETURNED TO PIT AND LANDED WITHOUT FURTHER INCIDENT.MAINTENANCE INSPECTED THE #1 ENGINE AND FOUND THE #1 ENGINE BLEED PRESSURE REGULATOR AND SHUTOFF VALVE HAD FAILED.THE "V" BAND CLAMP FLANGE HAD BROKEN.THE PRESSURE REGULATOR AND SHUTOFF VALVE WAS REPLACED ALONG WITH THE "V" BAND CLAMPS.OPERATIONAL CHECKS WERE GOOD AND THE AIRCRAFT WAS RELEASED FOR SERVICE.