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SDR 2024FA0000372

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Service difficulty report · Bearing · Swrngn SA227AC

FAA SDR system

Difficulty date
April 21, 2024
Submitted
May 20, 2024
Operation
General aviation
Aircraft
N175SW
Make and model
Swrngn SA227AC
Aircraft serial
AC621B
Aircraft time
36,998 hours, 56,515 cycles
Engine
Garrtt TPE33111U
Engine time
36,414 hours, 47,070 cycles
Propeller
Mtprop MTV271E
System (JASC)
7700 · Engine Indicating System
Part
Bearing
Part number
3103035AL1
Part serial
TA43051023
Condition
Failed
Location
Torque Sensor
Part time
2,125 hours
Component
Dual Spur Gear
Component part number
31035901
Stage of operation
IN
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 FAILED (PN: 3103585AL-1, SN: TA43-0510123, TSN: 2,125.4). SPECTROMETRIC OIL ANALYSIS PROGRAM RESULT REPORT DISCOVERED M50 PLATELETS, SHINY, >100, UP TO 1.1MMX0.9MM. M50 IS A BEARING RACE MATERIAL AND THE QUANTITY OF PLATELETS FOUND IN THE FILTER ANALYSIS INDICATES A BEATING IS FAILING.