# SDR ASAA2023011541779

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 15, 2023
- Submitted: February 4, 2023
- Operation: Air carrier
- Aircraft: [N559AS](https://openairdocs.org/aircraft/N559AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35178
- Aircraft time: 56,816 hours, 16,731 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Control Panel
- Part number: 8221567102
- Part serial: 171MM8
- Condition: Inoperative
- Location: Flight Deck
- Part time: 46,391 hours, 17,110 cycles
- Stage of operation: NR
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023011541779

## Discrepancy

MCP IAS/MACH WINDOW WILL NOT CHANGE IN FLIGHT REQUIRING CREW TO FLY RNAV APPROACH. GROUNDED - YES. RMVD AND INSTALLED NEW MCP. REF B737-800 22-11-34.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.