As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FWA - FLT 4173 - DURING CRUISE FLIGHT, CREW REPORTED A 'BLEED NUMBER 1 LEAK' MESSAGE ON EICAS. CREW DIVERTED TO FWA DUE TO NO CABIN/COCKPIT HEAT AND WEATHER AT DESTINATION. AN EMERGENCY WAS DECLARED. MAINTENANCE FOUND AND TIGHTENED SOME LOOSE CLAMPS IN THE NR 1 BLEED SYSTEM. OPERATIONAL CHECK WAS GOOD AND AIRCRAFT WAS RETURNED TO SERVICE. (M)