Service difficulty report · Insulation · Boeing 767375

Difficulty date
October 29, 2010
Submitted
January 4, 2011
Operation
Air carrier
Make and model
Boeing 767375
Aircraft time
88,930 hours
Engine
Ge CF680C2B6
Part
Insulation
Condition
Cracked
Location
Wire
Component
Wire
Component part number
W508301B20
Stage of operation
IN
How discovered
V
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

(CAN) FROM AN INSPECTION ON AIRCRAFT 685 AND PHOTO’S OF THE ISSUE IN QUESTION IN ATTACHMENT. THERE ARE SEVEN WIRE BUNDLES THAT ALL HAVE ONE BLUE WIRE IN EACH. IN EACH BUNDLE THE BLUE WIRE ONLY, HAS CRACKED SHIELDING DOWN TO THE CORE FOR A TOTAL OF 15 CRACKS. THESE WIRES RAISE A CONCERN DUE TO THE FACT THAT THEY ARE STAND ALONE. FURTHERMORE, THEY ARE IN THE HOT AREA OF THE PACKS LOCATED INBD OF THE WING ROOT. IF A FAULTY OR LEAKING FUEL DRAIN WERE PRESENT, YET ANOTHER ELEMENT WOULD BE ADDED TO A POTENTIAL HAZARD.