SDR ASAA2017110922521

Service difficulty report · Fmc · Boeing 737990ER

Difficulty date: November 9, 2017
Submitted: November 13, 2017
Operation: Air carrier
Aircraft: N479AS
Make and model: Boeing 737990ER
Aircraft serial: 60576
Aircraft time: 9,398 hours, 3,119 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Condition: Faulted
Stage of operation: LD
How discovered: O
Nature of condition: J
Precautionary procedure: K

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

What was found

AFTER LANDING 1ST OFFICERS, NO VTK FLAG APPEAR AND DISAPPEAR REPEATEDLY WITH FMC ALERT LIGHT AND NO SCRATCH PAD INFO. GROUNDED - YES. ACCOMPLISHED FMC BITE, REF FIM 34-61 TASK 801 FOUND RT FMC FAULT ON GROUND. ACCOMPLISHED FIM 34-61 TASK 807, FAULT CLEARED. RT FMC OPS NORMAL REF SAME.