SDR ASAA2016031916013

Service difficulty report · Fmc · Boeing 737890

Difficulty date: March 19, 2016
Submitted: March 22, 2016
Operation: Air carrier
Aircraft: N581AS
Make and model: Boeing 737890
Aircraft serial: 35188
Aircraft time: 34,176 hours, 10,347 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Part number: 1762000101
Part serial: 000726
Condition: Failed
Location: Left
Part time: 42,588 hours, 16,668 cycles
Stage of operation: NR
How discovered: O
Nature of condition: O
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 INOPERATIVE. CDU PROMPT NOT AVAILABLE WHEN FMC SWITCH IN NORMAL OR BOTH ON LEFT. PROMPT AVAILABLE WHEN FMC SET TO BOTH ON RT. ACFT POWERED BY GPU OR APU. ACFT GROUNDED. REPLACED LT FMC, SOFTWARE CROSSLOADED SUCCESSFULLY, ALL OPS NORMAL, REF AMM 34-61-02, 34-61-00.