Service difficulty report · Wire Harness · Boeing 777222

Difficulty date
May 21, 2013
Submitted
July 2, 2013
Operation
Air carrier
Aircraft
N206UA
Make and model
Boeing 777222
Aircraft serial
30212
Aircraft time
61,623 hours, 8,733 cycles
Engine
Pwa PW4090
Part
Wire Harness
Condition
Faulted
Location
Nr 1 Engine
Stage of operation
NR
How discovered
9
Nature of condition
N
Precautionary procedure
O

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

What was found

DUE TO "A" CHANNEL EGT FAULTS ON NR 1 ENG & HIGH INTERNAL CIRCUIT RESISTANCE. AT 9:00 POSITION, FOUND WIDE RESISTANCE CHANGES ON A CHANNEL CIRCUIT. REPLACED WIRE HARNESS W0635 IAW MM 77-21-02. ALL INDICATIONS NORMAL.