Service difficulty report · Circuit Breaker · Boeing 75729J

Difficulty date
July 27, 2021
Submitted
August 5, 2021
Operation
Air carrier
Aircraft
N757QM
Make and model
Boeing 75729J
Aircraft serial
27203
Aircraft time
62,544 hours, 33,269 cycles
Part
Circuit Breaker
Part number
B4301
Part serial
CL13334
Condition
Faulted
Location
E&E Bay
Stage of operation
TX
How discovered
9
Nature of condition
S
Precautionary procedure
D

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

What was found

LEFT GEN OFF AND LEFT BUS OFF DURING TAXI. MX FOUND A FAULTY BTB AT THE LEFT SYSTEM WHICH WAS REPLACED AND CONFIRMED OPERATIONAL DURING THE OPS CHECK.

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