# SDR ASAA2016031015863

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 10, 2016
- Submitted: March 14, 2016
- Operation: Air carrier
- Aircraft: [N586AS](https://openairdocs.org/aircraft/N586AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35189
- Aircraft time: 32,336 hours, 9,921 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Control Panel
- Condition: Malfunctioned
- Stage of operation: TX
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2016031015863

## Discrepancy

MCP BLANK ON PREFLIGHT. ACFT GROUNDED. RESET 9 C/B.  MCP R2 REF AMM 22-11-34. ACCOMPLISHED MCP INSTALL TEST IAW AMM 22-11-34-740-001.  SYS OPS NORMAL.  ALL TESTS PASSED.  PROBLEM OCCURRED AT POWER TRANSFER.  BOTH APU AND GROUND POWER OK.

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