SDR ASAA2012111093278

Service difficulty report · Fmc · Boeing 737890

Difficulty date: November 10, 2012
Submitted: November 14, 2012
Operation: Air carrier
Aircraft: N564AS
Make and model: Boeing 737890
Aircraft serial: 35103
Aircraft time: 23,329 hours, 7,270 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Part number: 1762000101
Part serial: 006845
Condition: Malfunctioned
Location: E/E Bay
Part time: 2,538 hours, 740 cycles
Stage of operation: CR
How discovered: O
Nature of condition: J
Precautionary procedure: O

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

What was found

DURING CRUISE, CAPTAIN RECEIVED AN VTK AND LOST FMC. F/O THEN LOST FMC. SELF CORRECTED WITHIN TWO MINUTES ON FINAL, FMC DISAGREE AND AND LANDING SPEEDS IN FMC NOT RIGHT. ALL PERFORMANCE DATA HAD DUMPED WITH BOXES SHOWING ON PERFORMANCE UNIT PAGE. DUAL FMC OPERATION RESTORED , OPS CHECKED OK IAW FIM 34-61-00 NO INFLIGHT OR SENSOR FAULT NOTED FOR FMC NR 1 OR NR 2, NO 30 DAY HISTORY.