SDR ASAA2017061221042

Service difficulty report · Fmc · Boeing 737890

Difficulty date: June 12, 2017
Submitted: June 13, 2017
Operation: Air carrier
Aircraft: N581AS
Make and model: Boeing 737890
Aircraft serial: 35188
Aircraft time: 38,376 hours, 11,555 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Condition: Malfunctioned
Stage of operation: LD
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

ON LANDING, CAPTAIN'S NAV DISPLAY SHOWED VTK INTERMITTENTLY, DURING TAXI-IN VTK DISPLAYED FOR 5-10 SECONDS THEN FULL FUNCTIONALITY WAS RESTORED. THEN 10-20 SECONDS LATER VTK WOULD REAPPEAR. ENTIRE CYCLE REPEATED FIVE TIMES DURING TAXI-IN. ACFT GROUNDED. ACCOMPLISHED LT FMC BITE, INFLIGHT FAULTS LOGGED G PGM FAULT. RESET THE LT FMC IAW FIM 34-61, TASK 807.