# SDR QXEA2009121401047

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 9, 2009
- Submitted: December 14, 2009
- Operation: Air carrier
- Aircraft: N427QX
- Make and model: Bombdr DHC8402
- Aircraft serial: 4156
- Aircraft time: 6,752 hours, 7,307 cycles
- System (JASC): [6120 · Propeller Controlling System](https://openairdocs.org/jasc/6120)
- Part: Pcu
- Part number: 697073002
- Part serial: DAP0134
- Condition: Malfunctioned
- Location: Zone 400
- Part time: 18,992 hours, 19,462 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QXEA2009121401047

## Discrepancy

DURING CLIMB NR 1 PROP RPM FLUCTUATED FROM 850 TO 860 FOR APPROX FOR 3 SECONDS AND RETURNED TO 850 RPM.  REPLACED NR 1 PCU IAW AMM TASK 61-20-11-000-801 AND 61-20-11-400-801 AND TASK CARDS NR 661001, 661002, 6710008, 6710005. OPS CKS GOOD. ALL INDICATIONS NORMAL, ACFT OK FOR SERVICE.

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