# SDR QXEA2009010401098

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 30, 2009
- Submitted: January 4, 2010
- Operation: Air carrier
- Aircraft: N401QX
- Make and model: Bombdr DHC8402
- Aircraft serial: 4031
- Aircraft time: 21,383 hours, 22,088 cycles
- System (JASC): [2760 · Drag Control System](https://openairdocs.org/jasc/2760)
- Part: Dump Valve
- Part number: 3958001007
- Part serial: 5785
- Condition: Malfunctioned
- Location: Spoilers
- Part time: 6,367 hours, 6,943 cycles
- Stage of operation: TO
- How discovered: O
- Nature of condition: J
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QXEA2009010401098

## Discrepancy

TAKEOFF WARNING HORN SOUNDED AT TAKEOFF ROLL. ABORTED TAKEOFF BELOW 60 KNOTS. THRUST LEVELS ABOVE IDLE, APPEARS THAT SPOILERS DID NOT RETRACT. REMOVED AND REPLACED NR 1 ADU IAW MX 6341101 OPS TEST AND LEAK CHECK GOOD. REMOVED AND REPLACED BOTH OTBD LIFT DUMP VALVES IAW TECH SUPPORT DUE TO HISTORY IAW AMM TASK 27-62-01-000-801 AND 27-62-01-400-801. OPS CHECK GOOD. NO FURTHER DEFECTS NOTED.  ACFT RETURNED TO SERVICE.

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