What was found
ON PREFLIGHT THE FMC WORKS AND THEN FREEZES WITH VTK APPEARING ON THE MFD'S ABOUT EVERY 5 SECONDS. GROUNDED - YES. RESET FMC'S SYSTEM OPS NORMAL REF B737-900 AMM 34-61-00.
- Difficulty date
- April 10, 2020
- Submitted
- April 13, 2020
- Operation
- Air carrier
- Aircraft
- N434AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 61620
- Aircraft time
- 16,131 hours, 5,069 cycles
- System (JASC)
- 3460 · Flight Management Computing Hardware System
- Part
- Fmc
- Condition
- Malfunctioned
- Location
- Cockpit
- Stage of operation
- TX
- 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.