What was found
WHEN TAKEOFF POWER WAS APPLIED, THE TAKEOFF WARNING HORN SOUNDED. FLAPS AND LEADING EDGE DEVICES INDICATED NORMAL. AIRCRAFT RETURNED TO THE GATE. REPLACED THE UPPER TRIM WARNING SWITCH. OPERATIONAL CHECK WAS NORMAL.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
WHEN TAKEOFF POWER WAS APPLIED, THE TAKEOFF WARNING HORN SOUNDED. FLAPS AND LEADING EDGE DEVICES INDICATED NORMAL. AIRCRAFT RETURNED TO THE GATE. REPLACED THE UPPER TRIM WARNING SWITCH. OPERATIONAL CHECK WAS NORMAL.