Service difficulty report · Bearing · Bell 206B

Difficulty date
March 3, 2003
Submitted
April 14, 2003
Operation
Air carrier
Make and model
Bell 206B
Aircraft time
11,226 hours
Engine
Allsn 250C20
Part
Bearing
Condition
Failed
Location
Turbine Assy
Stage of operation
DE
How discovered
O
Nature of condition
E, J
Precautionary procedure
A

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

What was found

(CAN) ON TEST FLIGHT FOLLOWING SCHEDULED MAINTENANCE INSPECTION, ENGINE CHIP LIGHT ILLUMINATED. AIRCRAFT LANDED AND ENGINE WAS SHUTDOWN, N2 DECAYED RAPIDLY AT SHUTDONW. TURBINE WAS FOUND TO HAVE ROTATIONAL BINDING, SUSPECT NR 8 BEARING FAILURE. METAL CONTAMINATION CAUSED SCORING IN ENGINE SCAVENGE OIL PUMP. AFFECTED ENGINE PARTS SENT TO REPAIR FACILITY.

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