As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT CRUISE ALTITUDE, DUAL BLEED LIGHT ILLUMINATED WITH ASSOCIATED MASTER CAUTION LIGHT. ACFT GROUNDED. REMOVED, REPLACED AND TESTED AIR CONDITIONING MODULE ASSY. (P5-10) IAW MM 21-51-65. OPS NORMAL. NORMAL OPERATION OF DUAL BLEED LIGHT OBSERVED.