# SDR ASAA2017061121038

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 11, 2017
- Submitted: June 13, 2017
- Operation: Air carrier
- Aircraft: [N569AS](https://openairdocs.org/aircraft/N569AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35184
- Aircraft time: 39,026 hours, 11,969 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Control Panel
- Part number: 8221567102
- Part serial: 16D3G5
- Condition: Intermittent
- Location: Flight Deck
- Part time: 37,648 hours, 11,584 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2017061121038

## Discrepancy

HEADING KNOB WORKS INTERMITTENTLY.  ACFT GROUNDED.  REPLACED MASTER CONTROL PANEL. ACCOMPLISHED INSTALLATION TEST AND LLM TESTS. ALL PASS IAW AMM 22-11-34-400-801.

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