Service difficulty report · Wire Harness · Boeing 7377H4

Difficulty date
August 5, 2024
Submitted
August 8, 2024
Operation
Air carrier
Aircraft
N235WN
Make and model
Boeing 7377H4
Aircraft serial
34630
Aircraft time
60,548 hours, 36,569 cycles
Part
Wire Harness
Condition
Disconnected
Location
Zn 400 Nacelle/P
Stage of operation
CL
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

RED BOX ON SHUTDOWN IN #2 ENG. EGT REDLINE LIMIT EXCEEDED ON TAKEOFF. DISCONNECTED A/T AND REDUCED THRUST; NO FURTHER INDICATIONS.<[01] T/S PER FIM 71-06 TASK 805 AND ACCOMPLISHED EA M-21-177-01860. FOUND CJ10 HARNESS; S3; AND S4 EGT PROBES FAILING RESISTANCE AND INSULATION TEST. REMOVED AND REPLACED CJ10 HARNESS PER AMM 73-21-06. REMOVED AND REPLACED S3 AND S4 EGT PROBES PER AMM 77-21-01.

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