Service difficulty report · Computer · Boeing 747451

Difficulty date
July 6, 2012
Submitted
July 16, 2012
Operation
Air carrier
Aircraft
N676NW
Make and model
Boeing 747451
Aircraft serial
33002
Aircraft time
45,557 hours, 5,752 cycles
Part
Computer
Condition
Malfunctioned
Location
Fire Detection
Stage of operation
AP
How discovered
O
Nature of condition
N
Precautionary procedure
O

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

What was found

ON SHORT FINAL APPROACH DURING GEAR EXTENSION, CREW RECEIVED WHEEL WELL FIRE INDICATION. AFTER LANDING, VERIFIED NO FIRE PRESENT. MAINTENANCE INSPECTED AREA, NO EVIDENCE OR INDICATION OF FIRE. MAINTENANCE THEN REPLACED LEFT CENTRAL MAINTENANCE COMPUTER PER AMM 45-10 AND INSTALLED SOFTWARE, FIRE INDICATION DISAPPEARED. PERFORMED GROUND TEST OF FIRE DETECTION, OPS CHECKED OK