# SDR ASAA2022093040121

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 30, 2022
- Submitted: October 3, 2022
- Operation: Air carrier
- Aircraft: [N536AS](https://openairdocs.org/aircraft/N536AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35203
- Aircraft time: 39,285 hours, 11,188 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Control Panel
- Part number: 8221567102
- Part serial: 16N1GV
- Condition: Failed
- Location: Flight Deck
- Part time: 43,556 hours, 15,172 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/ASAA2022093040121

## Discrepancy

VERTICAL SPEED WHEEL IS INOP WITH CAPTAIN FD (1) ENGAGED. OPERATES NORMAL WITH FIRST OFFICER (2) FD ENGAGED. NO OTHER ANOMALIES. GROUNDED - YES. REMOVED & REPLACED DFCS MODE CONTROL PANEL REF B737-800 AMM 22-11-34.

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