Service difficulty report · Thermocouple · Lear 35A

Difficulty date
April 21, 2004
Submitted
October 5, 2004
Operation
General aviation
Make and model
Lear 35A
Aircraft time
12,430 hours
Engine
Garrtt TFE73122B
Part
Thermocouple
Part number
30739501
Condition
Shorted
Location
Rt Engine
Stage of operation
CL
How discovered
O
Nature of condition
O
Precautionary procedure
O

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

What was found

(CAN) IN CLIMB AND CRUISE ALTITUDE THE FLIGHT CREW NOTICED A FLUCTUATION OF THE ITT ON THE RT ENGINE INDICATOR (ITT). TROUBLESHOOTING WAS DONE BY MAINTENANCE PERSONNEL AND THEY FOUND THE RT ITT HARNESS WAS TOUCHING THE OUTER CASE OF THE EXHAUST SHROUD (POOR ROUTING). THE HARNESS SHEILD WAS SHORTED.

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