What was found
F/O MCDU SCREEN SHOWED JUMBLED WEIRD CHARACTERS AND LETTERS MULTIPLE TIMES ENROUTE. GROUNDED - YES. REMOVED AND REPLACED F/O MCDU. OPS CHECK GOOD IAW B737-900 AMM 34-61-01-400-802.
- Difficulty date
- July 28, 2023
- Submitted
- July 31, 2023
- Operation
- Air carrier
- Aircraft
- N471AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 41703
- Aircraft time
- 33,099 hours, 10,332 cycles
- System (JASC)
- 3460 · Flight Management Computing Hardware System
- Part
- Display
- Part number
- 1741010302
- Part serial
- 001401
- Condition
- Faulty
- Location
- Flight Deck
- Part time
- 38,197 hours, 10,936 cycles
- Stage of operation
- CR
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.