SDR ASAA2020012171916

Service difficulty report · Warning Message · Boeing 737890

Difficulty date: January 17, 2020
Submitted: January 22, 2020
Operation: Air carrier
Aircraft: N532AS
Make and model: Boeing 737890
Aircraft serial: 36346
Aircraft time: 36,747 hours, 10,936 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Warning Message
Condition: False Activation
Location: Fmcs
Stage of operation: NR
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

FMCS DATA LOADER MESSAGE ON MCDU NO DISK IN DATA LOADER. GROUNDED - YES. PERFORMED FMS BITE TEST OF L & R FMS PER B737-800 FIM 34-61 TASK 801, OPS NRML - NO MESSAGES, FAULTS OR FAILURES NOTED. ETOPS SIGNIFICANT SYSTEM - GROUND VERIFICATION SUCCESSFUL.