SDR ASAA2015102713541

Service difficulty report · Fmc · Boeing 737890

Difficulty date: October 27, 2015
Submitted: October 29, 2015
Operation: Air carrier
Aircraft: N529AS
Make and model: Boeing 737890
Aircraft serial: 35198
Aircraft time: 21,901 hours, 6,641 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Condition: Failed
Location: Left
Stage of operation: NR
How discovered: 9
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 FAILURE UNABLE TO RESTORE AFTER QRH PROCEDURE. ACFT GROUNDED. VERIFIED DISCREPANCY, OPENED, CLOSED 2CBS FOR LT FMC, REF 34-61, TASK 836. FMC RETURNED TO NORMAL. ACCOMPLISHED LT FMC BITE 34-61, TASK 801. FOUND MMR, RT ILS FAULT. ACCOMPLISHED FIM 22-11, TASK 802. DFCS LRU REPLACEMENT TEST. NO MMR FAULTS FOUND. NO HISTORY IN 30 DAYS. SYS CKS NORMAL.