What was found
IN CRUISE L FMC FAILED IN CRUISE FMC RECOVERED ON ITS OWN. A/P ENTERED CWS-R AND ALT HOLD. NO FMC DATA ON BOTH CDU. FAILED AGAIN. GROUNDED - YES. RESET NR 1 FMC IAW FIM 34-61-TASK 836 GRND VERIFICATION SUCCESSFUL.
- Difficulty date
- February 20, 2019
- Submitted
- February 23, 2019
- Operation
- Air carrier
- Aircraft
- N477AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 40716
- Aircraft time
- 14,796 hours, 4,788 cycles
- System (JASC)
- 3460 · Flight Management Computing Hardware System
- Part
- Fmc
- 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.