SDR ASAA2015102013482

Service difficulty report · Fmc · Boeing 737990ER

Difficulty date: October 20, 2015
Submitted: October 22, 2015
Operation: Air carrier
Aircraft: N468AS
Make and model: Boeing 737990ER
Aircraft serial: 41735
Aircraft time: 5,065 hours, 1,660 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Condition: Failed
Location: Right
Stage of operation: CR
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

AT CRUISE ALT THE RT SIDE FMC FAILED WITH AMBER VTK AND MAP FLAGS. QRH WAS FOLLOWED WITH NO SUCCESS OF RESTORATION. FMS TRANFER SWITCH TO BOTH ON LT FOR REMAINDER OF FLIGHT. ALL BREAKERS ON FLIGHT DECK IN. ACFT GROUNDED. VERFIED DISCREPANCY, PLACED FMC TRANSFER SWITCH TO NORMAL. ACCOMPLISHED FIM 34-61, TASK 801. NO FAULTS LOGGED FOR RT FMC. IN ADDITION ACCOMPLISHED 34-61, TASK 836. SYS CKS NORMAL. NO HISTORY.