SDR ASAA2017022119896

Service difficulty report · Fmc · Boeing 737890

Difficulty date: February 21, 2017
Submitted: February 23, 2017
Operation: Air carrier
Aircraft: N589AS
Make and model: Boeing 737890
Aircraft serial: 35686
Aircraft time: 35,452 hours, 10,723 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Condition: False Indication
Location: Left
Stage of operation: TX
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

AFTER LANDING, VTK DISPLAYED CAPTAIN'S NAV DISPLAY. VTK DISPLAYED APPROXIMATELY 20 SECONDS LATER CDU NORMAL. ACFT GROUNDED. PERFORMED FMC BITE PROCEDURES IAW FIM 34-61, TASK 801. FOUND LEFT FMC PROGRAM FAULT. PERFORMED FIM 34-61, TASK 807 FOR PROGRAM AND FOUND TO BE AN INTERMITTENT FAULT.