# SDR QXEA0201971

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 20, 2002
- Submitted: November 22, 2002
- Operation: Air carrier
- Aircraft: N402QX
- Make and model: Bombdr DHC8401
- Aircraft serial: 4032
- Aircraft time: 3,340 hours, 4,003 cycles
- System (JASC): [6120 · Propeller Controlling System](https://openairdocs.org/jasc/6120)
- Part: Pitch Control
- Part number: 697073002
- Part serial: DAP0098
- Condition: Inoperative
- Location: Zone 400
- Part time: 3,505 hours, 4,240 cycles
- Stage of operation: CR
- How discovered: V
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QXEA0201971

## Discrepancy

MFR-#2 PROP RPM INCRREASED TO 1020 (UNCOMMANDED) FROM 900 CONTROL LEVER SETTING. INCREASED BOTH PROPS TO 1020 THEN RESET TO 900 THEN 850, #2 PROP INCREASED AGAIN TO 1020. FEATHERED #2 PROP. REMOVED AND REPLACED #2 PITCH CONTROL UNIT. OPERATIONAL AND LEAK CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.

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