Service difficulty report · Thermocouple · Boeing 7377H4

Difficulty date
December 25, 2022
Submitted
December 28, 2022
Operation
Air carrier
Aircraft
N447WN
Make and model
Boeing 7377H4
Aircraft serial
33720
Aircraft time
62,561 hours, 37,050 cycles
Part
Thermocouple
Condition
Out Of Range
Location
Nr 1 Engine
Stage of operation
CL
How discovered
O
Nature of condition
N
Precautionary procedure
A

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

What was found

DEPARTED ATL ON T/O PASSING 3000FT NR 1 ENGINE OVERHEAT .FOLLOWED QRC QRH REDUCED THRUST STAYED WITHIN LIMITS .LANDED ATL. FOUND NR 1 ENG T49.5 T3&T4 OUT OF RANGE; REMOVED AND REPLACED T3 & T4 THERMOCOUPLES REF AMM 77-21-01 PERFORMED ENGINE RUN OPS NORMAL RUN

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