SDR ASAA2018071725456

Service difficulty report · Not Reported · Boeing 737990ER

Difficulty date: July 17, 2018
Submitted: July 19, 2018
Operation: Air carrier
Aircraft: N467AS
Make and model: Boeing 737990ER
Aircraft serial: 36362
Aircraft time: 16,304 hours, 5,481 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Not Reported
Condition: Malfunctioned
Location: Cockpit
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

DURING CRUISE FLIGHT WE GOT SEVERAL INTERMITTENT VTK AND MAP FLAGS ON THE CAPT'S ND AND ALSO SOME RANDOM VTK FLAGS ON THE FO'S SIDE. WE ACCOMPLISHED THE QRH CHECKLIST AND SELECTED BOTH FMC'S ON THE RIGHT SIDE, CONTINUED WITH SINGLE FMC OPERATION WITH THE RIGHT SIDE AS THE LEFT SIDE WAS NOT TOTALLY RESTORED. GROUNDED - YES. PERFORMED FIM 34-61 TASK 801. FMCS SYS BITE PROCEDURE. NO FAULT NOTED. CHECKED GOOD. NO HISTORY IN 30 DAYS. OPS NORMAL. ALSO REF FIM TASK 22-11 TASK 801 (FMC-1).