SDR ASAA2020071082881

Service difficulty report · Fmc · Boeing 737890

Difficulty date: July 8, 2020
Submitted: July 10, 2020
Operation: Air carrier
Aircraft: N560AS
Make and model: Boeing 737890
Aircraft serial: 35179
Aircraft time: 51,920 hours, 15,496 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Condition: Unknown
Location: Right
Stage of operation: CR
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

IN CRUISE, CAPTAINS ND DISPLAYED VTK THEN MAP THE PROBLEM RESOLVED ITSELF. ND RETURNED TO NORMAL IN ABOUT 1 MINUTE. GROUNDED - YES. ACCOMP FMC BITE L/H FMC SHOWS LAST FLT FAULT FOR R FMC MSG IN R FMC REF B737-800 FIM 34-61 TASK 801. ACCOMP ADIRS BITE L & R ADIRS NO CURRENT FAULTS & NO FLT FAULTS REF B737-800 FIM 34-21 TASK 801.ACCOMP FMC L & R SENSOR TEST & FIXED OUT PUTS TEST.