What was found
LEFT FMC FAILED TWICE AT CRUISE. GROUNDED - YES. RELEASED PER MEL 34-36T LEFT HAND FMC INOP. L FMC LOGGED PGM FAULT. COULD NOT DUPLICATE MALFUNCTION, L FMC OP CK NORMAL REF B737-900 FIM 34-61 TASK 837.
- Difficulty date
- January 25, 2020
- Submitted
- January 28, 2020
- Operation
- Air carrier
- Aircraft
- N483AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 36350
- Aircraft time
- 17,881 hours, 5,744 cycles
- System (JASC)
- 3460 · Flight Management Computing Hardware System
- Part
- Fmc
- Condition
- Malfunctioned
- Location
- Left
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- N
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.