What was found
DURING TAKEOFF, THE APU FIRE WARNING ACTIVATED AT 50 TO 60 KNOTS. ABORTED TAKEOFF AND RETURNED TO THE GATE. REPLACED THE AUTOMATIC FIRE OVERHEAT LOGIC TEST SYSTEM AND RELAY R7692, OPERATIONAL CHECK GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING TAKEOFF, THE APU FIRE WARNING ACTIVATED AT 50 TO 60 KNOTS. ABORTED TAKEOFF AND RETURNED TO THE GATE. REPLACED THE AUTOMATIC FIRE OVERHEAT LOGIC TEST SYSTEM AND RELAY R7692, OPERATIONAL CHECK GOOD.