# SDR ASAA2020073082954

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 28, 2020
- Submitted: July 31, 2020
- Operation: Air carrier
- Aircraft: [N461AS](https://openairdocs.org/aircraft/N461AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36363
- Aircraft time: 24,421 hours, 7,816 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Button
- Condition: Sticking
- Location: Control Panel
- Part time: 16,280 hours, 5,109 cycles
- Stage of operation: IN
- 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/ASAA2020073082954

## Discrepancy

MCP BUTTONS STICK AND TAKES SEVERAL PUSHES OF HDG SEL AND LNAV BUTTONS TO GET THEM TO ACTIVE MODE WITH A GREEN LIGHT. GROUNDED - YES. REPLACED MCP WITH SERVICEABLE ONE. ACCOMP MCP INSTL TEST, TEST PASS. ALSO ACCOMP DFCS MCP REPLACEMENT TEST & LAND VERIFY TEST FOR LLM TESTS, TEST PASS REF B737-900 AMM 22-11-34-400-801 & AMM 22-11-34, & AMM 22-11-00.

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