# SDR QXEA2015082800447

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 28, 2015
- Submitted: September 1, 2015
- Operation: Air carrier
- Aircraft: N448QX
- Make and model: Bombdr DHC8402
- Aircraft serial: 4409
- Aircraft time: 7,888 hours, 8,484 cycles
- System (JASC): [6120 · Propeller Controlling System](https://openairdocs.org/jasc/6120)
- Part: Pcu
- Part number: 697073003
- Part serial: DAP0044
- Condition: Malfunctioned
- Location: Nr 1 Propeller
- Part time: 14,421 hours, 15,093 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QXEA2015082800447

## Discrepancy

AFTER NORMAL TAXI OUT TO THE RUNWAY END, THE NR 1 ENGINE PROPELLER WENT INTO FEATHER UNCOMMANDED TO 200 RPM.  TAXI BACK TO THE GATE.  AFTER 5 MINUTES TAXI BACK TO THE GATE, THE ENGINE CAME OUT OF FEATHER ON ITS OWN.  REPLACED THE NR 1 PEC, CHANNEL "A" HARNESS ASSY, NR 1 PCU.  OPS CHECKS GOOD.  PROPELLER FEATHERED AND UNFEATHERED AS COMMANDED.

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