# SDR ASAA2022091940029

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 19, 2022
- Submitted: September 23, 2022
- Operation: Air carrier
- Aircraft: [N597AS](https://openairdocs.org/aircraft/N597AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35689
- Aircraft time: 52,157 hours, 15,583 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Knob
- Condition: Intermittent
- Location: Heading Knob
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022091940029

## Discrepancy

HEADING KNOB SLEWS INTERMITTENTLY. GROUNDED - YES.  REMOVED AND REPLACED DFCS MODE CONTROL PANEL AND OPS CHECK GOOD IAW ASA B737-800 AMM 22-11-34.

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