Service difficulty report · Terminal Block · Boeing 777F1B

Difficulty date
September 10, 2013
Submitted
September 13, 2013
Operation
Air carrier
Aircraft
N776LA
Make and model
Boeing 777F1B
Aircraft serial
38091
Aircraft time
4,506 hours, 939 cycles
Part
Terminal Block
Condition
Burned
Location
Zone 100
Part time
4,506 hours, 939 cycles
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

AFTER PERFORMED INSP, FOR CONDITION AND OVERHEAT TO THE TERMINAL BLOCK RELAY, RELAY BASE AND ASSOCIATED WIRING IN THE P320 PANEL IAW RECOMMENDATION INCLUDED IN MULTI-OPERATOR MESSAGE NR MOM-13-0583-01B, PANEL P320 WAS FOUND WITH SEVERAL CLAMPS OF ITS BUNDLE WITH BURNED MARKS. DISABLE SOME CIRCUIT BREAKERS TO REDUCE THE LOADS TO THE CARGO AREA LIGHTNING CIRCUIT IAW RECOMMENDATION. REPLACED FOLLOWING PARTS: RELAY PN 40-617-1329, TERMINAL BLOCK, PN 001766-108-02, SOCKET PN RSE500413 AND ASSOCIATED HARDWARE. ALL WIRE BUNDLES WERE CLEANED. PERFORMED OPS TEST OF MAIN DECK CARGO LIGHTS IAW AMM 33-35-00. NO ADDITIONAL DISCREPANCIES NOTED.

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