What was found
IAS/MACH ADJUSTMENT KNOB WILL NOT ADJUST SPEED WHEN AP A OF FD #1 IS MASTER. ALSO, AP DISCONNECTED AT CRUISE. WE WERE ABLE TO RENGAGE AP A. GROUNDED - YES. REMOVED & REPLACED MCP REF B737-900 AMM 22-11-34-400-801.
- Difficulty date
- August 13, 2022
- Submitted
- August 19, 2022
- Operation
- Air carrier
- Aircraft
- N477AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 40716
- Aircraft time
- 25,730 hours, 7,993 cycles
- System (JASC)
- 2210 · Autopilot System
- Part
- Control Panel
- Part number
- 8221567102
- Part serial
- 17CLM6
- Condition
- Inoperative
- Location
- Flight Compartme
- Part time
- 45,750 hours, 13,997 cycles
- 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.