# SDR ASAA2016082217781

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 22, 2016
- Submitted: August 24, 2016
- Operation: Air carrier
- Aircraft: [N568AS](https://openairdocs.org/aircraft/N568AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35183
- Aircraft time: 36,665 hours, 11,280 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Unknown
- Condition: Malfunctioned
- Location: Cockpit
- 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/ASAA2016082217781

## Discrepancy

MCP VERT SPEED SELECTOR WHEEL INOPERATIVE.  ACFT GROUNDED.  UPON ACFT POWER-UP AT REMOTE LOCATION, VERTICAL SPEED SELECTOR KNOB AND DISPLAY OPS NORMAL.  FLIGHT DIRECTORS ON, V/S MODE COMMAND BARS ON, PRIMARY FLIGHT DISPLAYS AND CONTROL COLUMN FOLLOW V/S KNOB.  MCP TESTS BITE 70 GOOD.

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