SDR 9612416310

Service difficulty report · Fire Warning · Boeing 747451

Difficulty date
June 7, 1996
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N670US
Make and model
Boeing 747451
Aircraft serial
24225
Part
Fire Warning
Condition
Activated
Location
Apu
Stage of operation
TO
Nature of condition
N
Precautionary procedure
C, D

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

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.