What was found
MOMENTARY FAILURE OF LEFT FMC WITH VTK FLAG. FMC RESET ITSELF WITHIN ONE MINUTE WITHOUT PILOT INTERVENTION. GROUNDED - YES. PERFORMED B737-900 FIM 34-61 TASK 836 NO DEFECTS NOTED.
- Difficulty date
- April 5, 2019
- Submitted
- April 8, 2019
- Operation
- Air carrier
- Aircraft
- N407AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 41731
- Aircraft time
- 25,287 hours, 8,123 cycles
- System (JASC)
- 3460 · Flight Management Computing Hardware System
- Part
- Fmc
- Condition
- Malfunctioned
- Location
- Left
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.