SDR ASAA2015102813544

Service difficulty report · Warning Message · Boeing 737890

Difficulty date: October 28, 2015
Submitted: October 30, 2015
Operation: Air carrier
Aircraft: N514AS
Make and model: Boeing 737890
Aircraft serial: 35193
Aircraft time: 27,096 hours, 8,240 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Warning Message
Condition: False Activation
Location: Fmc
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

FMC DISAGREE APPEARED ON THE MCDU SCRATCHPAD DURING TAXI FOR TAKEOFF. THERE HAD BEEN A 60+ SECOND POWER INTERRUPTION AT THE GATE DURING BOARDING WHEN GROUND PERSONNEL PULLED GROUND POWER WITHOUT AUTHORIZATION. ACFT GROUNDED. FOLLOWED QRH FOR FMC DISAGREE ON THE GROUND DUAL FMC OPERATION RESTORED.