Service difficulty report · Seal · Urocop EC130B4

Difficulty date
September 1, 2008
Submitted
October 24, 2008
Operation
Air carrier
Aircraft
N822MH
Make and model
Urocop EC130B4
Aircraft serial
4142
Engine
Tmeca ARRIEL2B1
Part
Seal
Condition
Leaking
Location
Freewheel Unit
Part time
3,430 hours
Component
Freewheel Unit
Component part number
0292907680
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

FOUND LEAKING EXCESSIVELY BOTH STATICALLY AND IN OPERATION DURING ROUTINE INSPECTION. INSTALLED NEWLY OVERHAULED FREE WHEEL SHAFT ASSY WITH NO FURTHER LEAKAGE NOTED. TEAR DOWN OF REMOVED ASSY REVEALED SEAL LIP HAD BEEN DAMAGED DURING ASSY. AS THE SHAFT WAS REPORTED TO BE INSTALLED FOR TEST CELL ENGINE. RUNS IT SEEMS ODD THE LEAK WAS NOT DISCOVERED AT THE OVERHAUL FACILITY. THIS IS THE SECOND TIME A NEWLY OVERHAULED ENGINE WAS INSTALLED THAT HAD A DAMAGED SEAL WHEN RECEIVED FROM THE FACTORY. (K)

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