What was found
LEFT FMC FAILED. VTK & MAP FLAGS LOSS OF LNAV RESTORED ITSELF. GROUNDED - YES. ACCOMPLISHED FIM 34-61 TASK 836, LEFT FMC OPS CHECK NORMAL.
- Difficulty date
- September 22, 2018
- Submitted
- September 24, 2018
- Operation
- Air carrier
- Aircraft
- N433AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 41704
- Aircraft time
- 19,605 hours, 6,460 cycles
- System (JASC)
- 3460 · Flight Management Computing Hardware System
- Part
- Fmc
- Condition
- Malfunctioned
- Location
- Cockpit
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.