What was found
1ST FLIGHT OUT 15 MIN FORM DEPARTURE, THE FIRE WARNING HORN STARTED GOING OFF WITHOUT LIGHT IN FLIGHT, NO OTHER INDICATIONS OF FIRE, RETURNED TO DEPARTURE. (K)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
1ST FLIGHT OUT 15 MIN FORM DEPARTURE, THE FIRE WARNING HORN STARTED GOING OFF WITHOUT LIGHT IN FLIGHT, NO OTHER INDICATIONS OF FIRE, RETURNED TO DEPARTURE. (K)