As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) FLIGHT CREW HAD A BLEED AIR WARNING LIGHT DURING FLIGHT. SYSTEM WAS TROUBLESHOT AND PROBLEM WAS FOUND TO BE THE BLEED AIR WARNING SWITCH HAD AN INTERNAL FAILURE. SWITCH, PN 90-380002-3 WAS REPLACED WITH NEW AND SYS GROUND TESTED SERVICEABLE.