What was found
MCP VERT SPEED LCD WINDOW HAS CLUTTER THAT INTERFERES WITH NUMERICAL INDICATIONS. GROUNDED - YES. REMOVED & REPLACED DFCS MCP REF B737-900 AMM 22-11-34 ALL INSTALLATION TEST & LLM PASS.
- Difficulty date
- September 30, 2021
- Submitted
- October 8, 2021
- Operation
- Air carrier
- Aircraft
- N407AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 41731
- Aircraft time
- 33,622 hours, 10,581 cycles
- System (JASC)
- 2210 · Autopilot System
- Part
- Panel
- Part number
- 8221567104
- Part serial
- 47NGG4
- Condition
- None
- Location
- Cockpit
- Stage of operation
- NR
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.