# SDR ASAA2023061243555

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 12, 2023
- Submitted: June 14, 2023
- Operation: Air carrier
- Aircraft: [N479AS](https://openairdocs.org/aircraft/N479AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 60576
- Aircraft time: 28,064 hours, 8,739 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Control Panel
- Part number: 8221567102
- Part serial: 17FC6T
- Condition: Degraded
- Location: Cockpit
- Part time: 46,753 hours, 14,022 cycles
- Stage of operation: NR
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023061243555

## Discrepancy

IN IAS/MACH WINDOW ON MCP A SMALL HORIZONTAL LINE IS OBSCURING THE FIRST DIGIT OF SPEED DISPLAY. GROUNDED - YES. REMOVED & REPLACED MCP REF B737-900 AMM 22-11-34.

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