What was found
BOTH FMCS FAILED FOR APPROXIMATELY ONE MINUTE 2.5 HOURS INTO THE FLIGHT THEN RESTORED ON THEIR OWN. GROUNDED - YES. ACCOMPLISHED B737-900 FIM 34-61 TASK 837. OPS CK GOOD. NO HISTORY PAST 30 DAYS.
- Difficulty date
- November 19, 2021
- Submitted
- November 22, 2021
- Operation
- Air carrier
- Aircraft
- N479AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 60576
- Aircraft time
- 22,462 hours, 7,109 cycles
- System (JASC)
- 3460 · Flight Management Computing Hardware System
- Part
- Unknown
- Part number
- UNKNOWN
- Condition
- Unknown
- Location
- Unknown
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.