What was found
DURING CRUISE AT FL340, GOT A "VTK" AND "MAP" ON RT FMC. L NAV AND V NAV DISCONNECTED. WAS STARTING TO RUN CHECKLIST WHEN PROBLEM SELF CORRECTED. ACFT GROUNDED. BOTH FMC'S OPS NORMAL, REF MM 34-61-00. ACFT GROUND VERIFICATION GOOD.
- Difficulty date
- March 25, 2015
- Submitted
- March 27, 2015
- Operation
- Air carrier
- Aircraft
- N431AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 43255
- Aircraft time
- 5,583 hours, 1,865 cycles
- System (JASC)
- 3460 · Flight Management Computing Hardware System
- Part
- Warning Message
- Condition
- False Activation
- Location
- Fmc
- Stage of operation
- CR
- How discovered
- 9
- Nature of condition
- N
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.