# SDR ASAA2017040620385

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 6, 2017
- Submitted: April 10, 2017
- Operation: Air carrier
- Aircraft: [N467AS](https://openairdocs.org/aircraft/N467AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36362
- Aircraft time: 11,359 hours, 3,772 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Knob
- Part number: 8221567102
- Part serial: 42TGCM
- Condition: Stuck
- Location: Control Panel
- Part time: 11,357 hours, 3,771 cycles
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2017040620385

## Discrepancy

A/S KNOB CONTROLLING A/S IN SPD WINDOW =FROZEN @ 178 KTS. ACFT GROUNDED.  REMOVED AND REPLACED MCP, IAW AMM 22-11-34-00-801, & 22-11-34-400-801. PERFORMED OPS CHECKED IAW AMM 22-11-34-740-801.

---
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.