SDR ASAA2017061621112

Service difficulty report · Fmc · Boeing 737990ER

Difficulty date: June 16, 2017
Submitted: June 19, 2017
Operation: Air carrier
Aircraft: N479AS
Make and model: Boeing 737990ER
Aircraft serial: 60576
Aircraft time: 7,720 hours, 2,595 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Condition: Malfunctioned
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, FIRST OFFICER ND DISPLAYED VTK FOLLOWED BY MAP. BEFORE QRH PROCEDURE COULD BE PERFORMED FLAGS DISAPPEARED AND NORMAL OPS RESUMED. ACFT GROUNDED. PERFORMED FIM 34-61-801, NO FAULTS FOUND. PERFORMED AMM TASK 34-61-00-860-801, FMC LANDING, TAXI, VTK, MAP NUISANCE ERROR FOUND. ACFT OK FOR SERVICE.