# SDR QXEA2019042200183

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 18, 2019
- Submitted: April 22, 2019
- Operation: Air carrier
- Aircraft: N453QX
- Make and model: Bombdr DHC8402
- Aircraft serial: 4489
- Aircraft time: 9,626 hours, 10,242 cycles
- Propeller: Dowty R4086123F17
- System (JASC): [6120 · Propeller Controlling System](https://openairdocs.org/jasc/6120)
- Part: Control Unit
- Part number: 697073003
- Condition: Malfunctioned
- Location: Nr 1 Propeller
- Stage of operation: TO
- How discovered: O
- Nature of condition: R, J
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QXEA2019042200183

## Discrepancy

TAKE OFF ABORTED DUE TO NR 1 ENGINE TORQUE AT 97%,  BUG 90% AIRSPEED,  AT ABORT, BETWEEN 50-70 KTS.  NO EXCESSIVE BRAKING. REMOVED FROM SERVICE. CDS INDICATED FAULT CODE 158 A/B. C/W EMU DOWNLOAD IAW T/C # 6773101.  ACCOMPLISHED HIGH PWR RUN,  DUPLICATED ORIGINAL DISCREPENCY.  C/W ADDITIONAL EMU DOWNLOAD REF T/C  6773101.  REPLACED PITCH CONTROL UNIT.  RETURNED TO SERVICE.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.