# SDR COMA9531200

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 5, 1995
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N344CA](https://openairdocs.org/aircraft/N344CA), registered now
- Make and model: Saab SF340A
- Registry model: [Saab SF340A](https://openairdocs.org/model/saab-scania-sf340a) (OpenAirDocs)
- Aircraft serial: 340A25
- System (JASC): [2750 · Trailing Edge Flap Control System](https://openairdocs.org/jasc/2750)
- Part: Control Valve
- Part number: HP14161005
- Condition: Malfunctioned
- Location: Te Flaps
- Part time: 21,484 hours
- Stage of operation: CR
- Nature of condition: J, F
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/COMA9531200

## Discrepancy

UNCOMMANDED FLAP EXTENSION AND RETRACTION DURING FLIGHT.  FLAPS WOULD OSCILLATE 3 DEGREES EVERY TEN MINUTES.  REPLACED THE FLAP HYDRAULIC CONTROL VALVE.

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