What was found
VTK/MAP CA SIDE MULTIPLE TIMES DURING CRUISE, WOULD RESET AFTER 30-60 SECS. STARTED TO DO IT CONT. PER QRH PUT FMC SWITCH TO BOTH ON RIGHT. GROUNDED - YES. REALIGNED IRU'S DISPLAYS NORMAL NO HISTORY 60 DAYS. FMC SWITCH BACK TO NORMAL.
- Difficulty date
- January 22, 2019
- Submitted
- January 24, 2019
- Operation
- Air carrier
- Aircraft
- N491AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 44109
- Aircraft time
- 12,825 hours, 4,284 cycles
- System (JASC)
- 3460 · Flight Management Computing Hardware System
- Part
- Unknown
- 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.