# SDR ASAA2016112418803

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 24, 2016
- Submitted: November 28, 2016
- Operation: Air carrier
- Aircraft: [N568AS](https://openairdocs.org/aircraft/N568AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35183
- Aircraft time: 37,557 hours, 11,532 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Control Panel
- Part number: 8221567102
- Part serial: 16D3F6
- Condition: Failed
- Location: Flight Deck
- Part time: 39,156 hours, 11,454 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/ASAA2016112418803

## Discrepancy

VERTICAL SPEED DISPLAY HAS ILLUMINATION THAT SHOULD NOT BE THERE. ACFT GROUNDED. REMOVED AND REPLACED MODE CONTROL PANEL IAW AMM 22-11-34. INSTALLATION TEST PASSED IAW AMM 22-11-34-740-801. ACCOMPLISHED DFCS MCP LRU INTERFACE TEST GRP BITE 32 AND LAND VERIFY TEST GRP BITE 49 BOTH TEST OPS NORMAL IAW AMM 22-11-00/201. ACCOMPLISHED HGS FCC/AT SENSOR DATA TEST OPS NORMAL IAW MMS 34-36-00. AIRCRAFT REMAINS CAT IIIA AUTOLAND AND HGS, SCREW REFLECT SAME.

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