Service difficulty report · Clutch · Hughes 369E

Difficulty date
July 28, 2024
Submitted
July 30, 2024
Operation
General aviation
Aircraft
N842JH
Make and model
Hughes 369E
Aircraft serial
0020E
Aircraft time
24,021 hours, 21,538 cycles
Engine
Allsn 250C20B
Engine time
16,845 hours, 9,452 cycles
Part
Clutch
Part number
369A535051
Part serial
83405G
Condition
Making Metal
Location
Drive Train
Stage of operation
IN
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

DURING A SCHEDULED 100 HOUR MAINTENANCE INSPECTION ON THE AIRCRAFT. THE MECHANIC QUESTIONED THE DARK BURNT APPEARANCE OF THE GREASE IN THE • BEARING, OVERRUNNING CLUTCH BALL OUTPUT. PER OPERATOR REQUEST THE CLUTCH ASSEMBLY WAS DISASSEMBLED AND A SIGNIFICANT AMOUNT OF METAL WAS DISCOVERED IN THE RACE, CLUTCH OUTER. THE ASSEMBLY WAS SENT TO AN MD REPAIR STATION FOR INSPECTION. WEAR WAS FOUND ON THE CAGE OF THE SPRAG ASSEMBLY. NO EXTERNAL LOAD OPERATIONS WERE PERFORMED WITH THIS CLUTCH IN SERVICE.

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