SDR ASAA2013122212217

Service difficulty report · Warning Message · Boeing 737890

Difficulty date: December 22, 2013
Submitted: December 24, 2013
Operation: Air carrier
Aircraft: N589AS
Make and model: Boeing 737890
Aircraft serial: 35686
Aircraft time: 23,427 hours, 7,223 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Warning Message
Condition: Illuminated
Location: Fmc
Stage of operation: AP
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 MISSED APPROACH, FMC DISAGREE MESSAGE APPEARED ON BOTH FMCS AND FMC P/RST ILLUMINATED ON BOTH SIDES. ACFT GROUNDED. IAW FIM 34-61, TASK 835, APPEARS TO HAVE BEEN AN INTERMITTENT FAULT. CREW REPORTS DISAGREE MESSAGE CLEARED BEFORE LANDING. FMC DISAGREE MESSAGE CURRENTLY EXTINGUISHED.