# SDR ASAA2022012337228

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 23, 2022
- Submitted: January 25, 2022
- Operation: Air carrier
- Aircraft: [N568AS](https://openairdocs.org/aircraft/N568AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35183
- Aircraft time: 52,898 hours, 15,823 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- 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/ASAA2022012337228

## Discrepancy

VERTICAL SPEED SELECTOR JUMPS BETWEEN VALUES INSTEAD OF HAVING LINEAR SCALING WHEN SELECTED. GROUNDED - YES. ACCOMPLISHED DFCS OPERATION TEST REF B737-800 AMM 22-11-00-740-801 MCP VERTICAL SPEED KNOB CK 12.56 TEST PASS. WIITH VERTICAL SPEED SELECTOR CYCLED THROUGH, NO JUMPING NOTED.

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