# SDR ASAA2018063025282

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 30, 2018
- Submitted: July 6, 2018
- Operation: Air carrier
- Aircraft: [N559AS](https://openairdocs.org/aircraft/N559AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35178
- Aircraft time: 43,508 hours, 12,981 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Control Panel
- Part number: 8221567102
- Part serial: 16D3KP
- Condition: Defective
- Location: Cockpit
- Part time: 42,442 hours, 13,061 cycles
- 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/ASAA2018063025282

## Discrepancy

MCP ALT SELECTOR BLEMISH IN MIDDLE OF DISPLAY-DISPLAY STILL READABLE. GROUNDED - YES. REMOVED & REPLACED MCP REF AMM 22-11-34. ACCOMPLISHED MCP INSTALLATION TEST REF AMM 22-11-34-740-801, LRU REPLACEMENT (GP 32) TEST (MCP) REF AMM 22-11-34/501, DFCS LAND VERIFY TEST (GP 49) REF AMM 22-11-00/201 & HGS SYSTEM TEST REF SMM 34-36-00, OPS CK NML.

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