# SDR QXEA2016052200339

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 22, 2016
- Submitted: May 23, 2016
- Operation: Air carrier
- Aircraft: N442QX
- Make and model: Bombdr DHC8402
- Aircraft serial: 4352
- Aircraft time: 12,506 hours, 13,221 cycles
- System (JASC): [6197 · Propeller/Propulsor System Wiring](https://openairdocs.org/jasc/6197)
- Part: Wire
- Condition: Chafed
- Location: Zone 400
- 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/QXEA2016052200339

## Discrepancy

NR 1 PEC CAUTION, POWERPLANT MESSAGE ON ED, PROP 1 BETA SOL CB POPPED WHILE TAKING RUNWAY FOR TAKEOFF, POWER LEVERS WERE BELOW FLIGHT IDLE. TAKEOFF ABORTED.  REMOVED 1 PEC CONNECTOR P20, CHECKED RESISTANCE OF GROUND BETA SOLENOID AND CIRCUIT PIN J TO J. COIL VALUE GOOD AT 58 OHMS.  MANIPULATED HARNESS.  NO CHANGE.  RE-CONNECTED P20. REMOVED PEC AIRFRAME CONNECTOR P70, FOUND INTERMITTENT SOLID SHORT TO GROUND, .2 OHMS, AT PIN G WHILE MANIPULATING HARNESS INSPECTED HARNESS AND FOUND 2 CHAFED WIRES AGAINST BLEED AIR PRE-COOLER.  REMOVED FIREWALL CONNECTOR P502 AND LOOSENED ALL ADEL CLAMPS BETWEEN P502 AND P70. 62200. REPLACED CHAFED WIRES IAW CMM 24-41-13 3542 5/21/16.  RE-INSTALLED NR 1 PEC CHANNEL "A" HARNESS IAW MAINTENANCE 6710006.  ALSO RAN NR 1 ENGINE AT VARIOUS POWER SETTINGS ABOVE AND BELOW FLIGHT IDLE GATE.  OPS CHECK GOOD.

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