What was found
VTK AND MAP ACCOMPANIED BY LNAV AND VNAV DISCONNECTING. THIS OCCURRED ON THE CAPTAIN'S DISPLAY UNIT. CREW ACCOMPLISHED RELATED QRH PROCEDURES AND THE ISSUE WAS RESOLVED. GROUNDED - YES. CAPT'S FMC OPS NORMAL REF FIM 34-61 TASK 837.
- Difficulty date
- September 21, 2018
- Submitted
- September 24, 2018
- Operation
- Air carrier
- Aircraft
- N433AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 41704
- Aircraft time
- 19,577 hours, 6,452 cycles
- System (JASC)
- 3460 · Flight Management Computing Hardware System
- Part
- Unknown
- Condition
- Malfunctioned
- Location
- Cockpit
- Stage of operation
- NR
- 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.