SDR ASAA2015090312940

Service difficulty report · Fmc · Boeing 737990ER

Difficulty date: September 3, 2015
Submitted: September 9, 2015
Operation: Air carrier
Aircraft: N477AS
Make and model: Boeing 737990ER
Aircraft serial: 40716
Aircraft time: 794 hours, 260 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Condition: False Indication
Stage of operation: NR
How discovered: 9
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

CAPTAIN NO FMC DATA AND VTK FLAG, NO FMC DATA ON BOTH CDU'S. APPROXIMATELY 30 SECONDS BOTH FMC'S RESTORED AND NORMAL OPS. ACFT GROUNDED. PERFORMED FMC FAULT ISOLATION PROCEDURE IAW FIM 34-61, TASK 836 AND FMC BITE PROCEDURE IAW FIM 34-61, TASK 801, OPS CHECK GOOD, NO FAULTS NOTED.