# SDR DXTA200702224

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 30, 2007
- Submitted: June 6, 2007
- Operation: Air carrier
- Aircraft: [N945QS](https://openairdocs.org/aircraft/N945QS), registered now
- Make and model: Cessna 750
- Registry model: [Cessna 750](https://openairdocs.org/model/cessna-750) (OpenAirDocs)
- Aircraft serial: 7500029
- Aircraft time: 8,747 hours, 5,956 cycles
- System (JASC): [2750 · Trailing Edge Flap Control System](https://openairdocs.org/jasc/2750)
- Part: Drive Unit
- Part number: MP50G4
- Part serial: 175A
- Condition: Inoperative
- Location: Te Flaps
- Part time: 8,747 hours, 8,956 cycles
- Stage of operation: AP
- How discovered: O
- Nature of condition: F
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA200702224

## Discrepancy

DURING FINAL APPROACH, WHEN FLAPS WERE SELECTED TO 35*, FLAPS FAIL LIGHT ILLUMINATED AND FLAPS STOPPED LOWERING AT ABOUT 20*. OPS CHECKED FLAP SYS ON GROUND. CHECKED GOOD. NO BITE CODES ON FLAP CONTROLLER. PERFORMED 750 FLAP T/S AND FOUND SUSPECT PDU. REMOVED PDU AND INSTALLED OVERHAULED PDU. OPS CHECK GOOD. NO BITE CODE PRESENT. IAW CESSNA 750 M/M 27-50-00.

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