# SDR ASAA2017090821859

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 8, 2017
- Submitted: September 11, 2017
- Operation: Air carrier
- Aircraft: [N468AS](https://openairdocs.org/aircraft/N468AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41735
- Aircraft time: 12,744 hours, 4,271 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Control Panel
- Condition: Malfunctioned
- Location: Course Selector
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2017090821859

## Discrepancy

FIRST OFFICER`S COURSE SELECTOR ON MCP IS FROZEN,  CAN'T CHANGE COURSE.  ACFT GROUNDED. VERIFIED DEFECT, CYCLED MCP DC 1 & 2 CIRCUIT BREAKERS,  FIRST OFFICER`S COURSE WINDOW OPS NORMAL IAW AMM 22-11-34. ACCOMPLISHED FLIGHT DIRECTOR MCP COURSE/HEADING SELECT TEST IAW AMM 22-11-00, TEST PASSED. NO HISTORY PAST 30 DAYS.

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