SDR ASAA2017022019886

Service difficulty report · Fmc · Boeing 737890

Difficulty date: February 20, 2017
Submitted: February 22, 2017
Operation: Air carrier
Aircraft: N577AS
Make and model: Boeing 737890
Aircraft serial: 35186
Aircraft time: 37,872 hours, 11,227 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Condition: Malfunctioned
Location: Left
Stage of operation: NR
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

LEFT FMC FAILED. ACFT GROUNDED. PERFORMED FIM TASK 34-61, TASK 836. RESET THE LT FMC SUCCESSFUL IAW FIM 34-61, TASK 836. PERFORMED LT FMC SYSTEM BITE PROCEDURE IAW FIM 34-61 TASK 801. BITE PROCEDURE NORMAL, NO FAULTS. PERFORMED ADIRS SYSTEM ALIGNMENT FROM THE FMC CDU, ALIGNMENT SUCCESSFUL, NO FAULTS IAW AMM 34-21-00-820-801. OPS NORMAL AT THIS TIME. PERFORMED ADIRS BITE PROCEDURE, NO MAINTENANCE MESSAGES OR FAULTS IAW FIM 34-21 TASK 801. GOOD FOR CONTINUED SERVICE AT THIS TIME.