# SDR DXTA2015081706060

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 16, 2015
- Submitted: August 17, 2015
- Operation: Air carrier
- Aircraft: N338QS
- Make and model: Cessna 680CE
- Aircraft serial: 6800011
- Aircraft time: 8,932 hours, 6,028 cycles
- System (JASC): [2740 · Stabilizer Control System](https://openairdocs.org/jasc/2740)
- Part: Trim System
- Condition: Uncontrollable
- Location: Stabilizer
- Stage of operation: CR
- How discovered: O
- Nature of condition: F, P
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2015081706060

## Discrepancy

PRIMARY STAB TRIM RUNAWAY INITIALLY UNCONTROLLABLE, ACFT PITCHED DOWN LOSING 2000 FEET UNTIL ACTUATING RED DISCONNECT BUTTON & TURNING ON SECONDARY TRIM, INDICATION WE HAD WAS ERRATIC FROM DASHED YELLOW LINES TO FULL UP & DOWN INDICATIONS.  WE HAD CYAN AUTO PILOT A & B FAIL.  SECONDARY TRIM OPERATIONS WERE NORMAL.

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