Service difficulty report · Fmc · Boeing 737990ER

Difficulty date
October 10, 2019
Submitted
October 14, 2019
Operation
Air carrier
Aircraft
N467AS
Make and model
Boeing 737990ER
Aircraft serial
36362
Aircraft time
21,296 hours, 7,008 cycles
Part
Fmc
Condition
Malfunctioned
Location
Dual
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

IN CRUISE FL 340 - WE HAD A DUAL FMC FAILURE FOR 1 MINUTE. IT RESET ON ITS OWN WITHOUT ANY INPUTS FROM PILOTS. VTK ON BOTH ND. GROUNDED - YES. ACCOMP B737-900 FIM 34-61 TASK 836 FOR RESET. WAS INTERMITTENT FAULT.