# SDR ASAA2022041237975

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 12, 2022
- Submitted: April 14, 2022
- Operation: Air carrier
- Aircraft: [N483AS](https://openairdocs.org/aircraft/N483AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36350
- Aircraft time: 24,438 hours, 7,727 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Autopilot Sys
- Part number: 4082260939
- Part serial: 99031708
- Condition: Disengaged
- Location: Cockpit
- Part time: 124 hours, 39 cycles
- Stage of operation: CR
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022041237975

## Discrepancy

"A" AUTOPILOT DISENGAGED TWICE AT CRUISE FL 340 .77 MACH. GROUNDED - YES. REMOVED & REPLACED DFCS MCP AND ACCOMPLISHED REQUIRED TESTS WITH NO FAULTS. REF B737-900 AMM 22-11-34.

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