As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMB OUT FROM KBIL THE FLIGHT CREW OBSERVED THE "LEFT BLEED FAIL" ANNUNCIATOR LIGHT ILLUMINATE. THEY RETURNED TO KBIL WITHOUT INCIDENT. MAINTENANCE REPLACED THE LEFT BLEED AIR PRESSURE SWITCH WITH A SERVICEABLE PRESSURE SWITCH AND THE SYSTEM OPS CHECKED GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.