SDR ASAA2022121241111

Service difficulty report · Fmc · Boeing 737890

Difficulty date: December 12, 2022
Submitted: December 13, 2022
Operation: Air carrier
Aircraft: N562AS
Make and model: Boeing 737890
Aircraft serial: 35091
Aircraft time: 59,013 hours, 17,387 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Condition: Faulted
Stage of operation: TX
How discovered: O
Nature of condition: J
Precautionary procedure: D

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

LNAV/VNAV WILL NOT ENGAGE ON GROUND. GROUNDED - YES. FMC BITE SHOWS FCC DATA SYNC ERR, DFCS SHOWS MCP MSG 22-11063. RESET MCP 9 C/B'S OPEN AND CLOSED, RESET FMC(S) 2 C/B'S OPEN AND CLOSED. RELOAD FLT PLAN, DFCS CURRENT STATUS PASS AND FMC OPS CKS NORMAL REF B737-800 FIM 22-11 TASK 830 AND 831. LNAV AND VNAV NOW ABLE TO ENGAGE ON GROUND.