# SDR MALA000574

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 23, 2000
- Submitted: October 25, 2000
- Operation: Air carrier
- Aircraft: N327XJ
- Make and model: Saab SF340A
- Registry model: [Saab SF340A](https://openairdocs.org/model/saab-scania-sf340a) (OpenAirDocs)
- Aircraft serial: 059
- System (JASC): [2750 · Trailing Edge Flap Control System](https://openairdocs.org/jasc/2750)
- Part: Control Valve
- Part number: HP1416100S
- Part serial: 1053
- Condition: Failed
- Location: Te Flaps
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/MALA000574

## Discrepancy

UNCOMMANDED FLAP DEPLOYMENT DURING T/O ROLL.  AIR TURNBACK.  MAINTENANCE COMPLETED TROUBLESHOOTING PROCEDURES IAW CHAP 27 AMM.  FLAP CONTROL OPS CHECK, AND FCB RIG CHECK GOOD.  COULD NOT DUPLICATE WRITE-UP.  SUSPECT BAD VALVE, MAINTENANCE REPLACED FLAP CONTROL VALVE P/N HP1416100-S, S/N ON 1580, SN OFF 1053.  ALL RIGGING WITHIN LIMITS.  ALL CHECKS GOOD IAW CHAP 27.

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