SDR ASAA2017100322113

Service difficulty report · Fmc · Boeing 737890

Difficulty date: October 3, 2017
Submitted: October 9, 2017
Operation: Air carrier
Aircraft: N596AS
Make and model: Boeing 737890
Aircraft serial: 35688
Aircraft time: 35,979 hours, 10,947 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Condition: Malfunctioned
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 FAILED FOR APPROXIMATELY 30 SECONDS. OPERATION RESTORED ON ITS OWN. ACFT GROUNDED. MENU / IDENT 1/X PAGE SHOWS NORMALLY ON POWER-UP. LIKELY SOFTWARE RESET IAW FIM 34-61 TASK 836. FMCS OPERATIONAL TESTED NORMAL IAW AMM 34-61-00-710-801. NO HISTORY 90+ DAYS.