SDR 2023FA0000357

Service difficulty report · Bearing Race · Cessna 441

Difficulty date: July 7, 2023
Submitted: July 7, 2023
Operation: General aviation
Aircraft: N441HS
Make and model: Cessna 441
Aircraft serial: 4410330
Engine: Garrtt TPE33110N
Engine time: 6,889 hours, 11,904 cycles
System (JASC): 7200 · Engine (Turbine/Turboprop)
Part: Bearing Race
Part number: 701001681
Part serial: 1915172505170
Condition: Galled
Location: Torque Sensor
Part time: 423 hours
Component: Torque Sensor · Hnywl
Component part number: 31017263
Stage of operation: UK
How discovered: O
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

TORQUE SENSOR BEARING INNER RACE GALLED [PN: 70100168-1, SN: 19-151725-05170, TSN: 423.1]. RESULTED IN BAD SOAP, 5 SHINY M50 PLATELETS UP TO 0.2MM REPORTED. ENGINE [TPE331-10N-512S, SN: P-77454, TSN: 6,889.1, CSN: 11,904, TSO: 2,424.0, CSO: 1,449].

More about the Cessna 441