Service difficulty report · Wire Harness · Airbus A320232

Difficulty date
March 2, 2007
Submitted
March 6, 2007
Operation
Air carrier
Aircraft
N427UA
Make and model
Airbus A320232
Aircraft serial
512
Aircraft time
41,635 hours, 14,969 cycles
Engine
Iae V2527A5
Part
Wire Harness
Condition
Unserviceable
Location
Nr 2 Engine
Stage of operation
IN
How discovered
9
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

NR 2 ENG HP VLV FAULT. FOUND DAMAGED CONNECTOR AND BURNED WIRES. [SUP 05-18-07] FOUND THE WIRING HARNESS BACKSHELL CONNECTOR ON THE HP VALVE WAS STRIPPED. INITIALLY ATTEMPTED TO REPLACE BACKSHELL CONNECTOR, BUT FOUND BURNT WIRES INSIDE CONNECTOR. DETERMINED THAT WIRES WERE NOT REPAIRABLE, SO REPLACED ENTIRE WIRING HARNESS FROM GROUND STUD TO HP VALVE AND FIRE LOOP. PREVIOUS OVER TORQUE OF THE BACKSHELL STRIPPED THE THREADS AND DAMAGED THE WIRES TO THE EXTENT THAT A SHORT OCCURRED AND BURNT THE WIRES. ALSO REPLACED THE HP VALVE AS A PRECAUTION.

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