# SDR 97ZZZX492

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 27, 1996
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: N690NA
- Make and model: Gulstm 690B
- Aircraft serial: 11359
- System (JASC): [2216 · Autopilot Trim Servo](https://openairdocs.org/jasc/2216)
- Part: Capstan
- Part number: 49A26
- Condition: Misinstalled
- Location: Trim Servo
- Component: Sigmatek, 1C4691377
- Stage of operation: IN
- Nature of condition: W
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/97ZZZX492

## Discrepancy

PILOT REPORTED A FRAYED CABLE IN AFT FUSELAGE.  THE CABLE FOR THE ELEVATOR TRIM WAS FRAYED AT ELECTRIC ELEVATOR TRIM SERVO LOCATION.  CAUSE OF FRAYING WAS DUE TO AN IMPROPERLY INSTALLED CAPSTAN, P/N 49A26, ON THE SERVO ASSY WHICH CAUSED THE GROOVE IN THE CAPSTAN TO WEAR AND CABLE TO FRAY.  SUBMITTER RECOMMENDS INSPECTION OF CABLE AND CAPSTAN INSTALLATION TO ASSURE PROPER INSTALLATION.  SERVO, P/N 1C469-1-377, EDO-AIRE.  SERVO CHANGED ABOUT 6 MOS PRIOR TO MALFUNCTION.

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