- Difficulty date
- May 8, 2020
- Submitted
- May 11, 2020
- Operation
- Air carrier
- Make and model
- Boeing 737990ER
- Aircraft serial
- 44105
- Aircraft time
- 18,985 hours, 6,114 cycles
- Part
- Unknown
- Condition
- Malfunctioned
- Location
- Autopilot Sys
- Stage of operation
- CR
- 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.
What was found
DURING CRUISE "B" AUTOFLIGHT DISENGAGED, ,WERE SMOOTH AIR. GROUNDED - YES. MCP DATA FAIL, FMC FAIL - LOGGED FAULTS. ACCOMPLISHED MCP EXTENDED MAINTENANCE TEST - NO FAULTS. LAND VERIFY CHECK OK, REF B737-900 AMM 22-11-00 BITE GROUP 49. FMC BITE OK REF AMM 34-61-00.