As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AFTER STARTING ENGINE NUMBER 1, AGAIN REPEAT ISSUE WITH THE FIRE WARNING LIGHT CAME ON AND WILL NOT GO OUT WHEN PRESSED AND AIR COND MASTER CAUTION LIGHT IS ON AND WILL NOT EXTINGUISH AS WELL. **SUPPLEMENTAL REPORT WILL BE SUBMITTED**(OPEN).