# SDR MALA010420

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 13, 2001
- Submitted: April 24, 2001
- Operation: Air carrier
- Aircraft: [N417XJ](https://openairdocs.org/aircraft/N417XJ), registered now
- Make and model: Saab 340B
- Registry model: [Saab 340B](https://openairdocs.org/model/saab-340b) (OpenAirDocs)
- Aircraft serial: 340B417
- System (JASC): [2750 · Trailing Edge Flap Control System](https://openairdocs.org/jasc/2750)
- Part: Control Unit
- Part number: 8519ME
- Part serial: 484
- Condition: Malfunctioned
- Location: T/E Flaps
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/MALA010420

## Discrepancy

DURING FLIGHT 2828, OUT OF DTW, FLAPS CYCLE BETWEEN 0-3 DEGREES EVERY 1-2 MINUTES DURING CRUISE.  FLIGHT AND FLT LVL 220, INDICATED SPEED OF 180-185.  AIR RETURN TO DTW.  MAINTENANCE REPLACED FLAP CONTROL UNIT AND FLAP CONTROL VALVE.  CONTROL UNIT P/N 8519M3, S/N OFF 061, S/N ON 484.  FLAP CONTROL VALVE P/N MP1416100-5, S/N OFF 1365, S/N ON 1606.  ALL CHECKS GOOD IAW SF340MM CHAP 27-51-00-5.

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