# SDR CA140729007

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 12, 2014
- Submitted: March 12, 2015
- Operation: General aviation
- Make and model: Boeing 737-7CT
- Registry model: [Boeing 737-7CT](https://openairdocs.org/model/boeing-737-7ct) (OpenAirDocs)
- Aircraft time: 37,650 hours
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Control Panel
- Part number: 8221567102
- Condition: Failed
- Location: Autopilot Sys
- Part time: 11,165 hours
- Stage of operation: CL
- How discovered: O
- Nature of condition: F
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA140729007

## Discrepancy

(CAN) DURING CLIMB OUT WITH AUTOPILOT "A" OR "B" ENGAGED, ENCOUNTERED CONSTANT TRIMMING OF AIRCRAFT NOSE UP AND THEN NOSE DOWN ALMOST CONTINUOUSLY. MAINTENANCE ADVISED A RETURN. DURING RETURN OCCURED AGAIN IN LEVEL FLIGHT AND HELD AT 12000FT. THE MODE CONTROL PANEL WAS REPLACED.

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