SDR HEER20151123925

Service difficulty report · Bearing · Bell 407

Difficulty date: November 23, 2015
Submitted: November 23, 2015
Operation: General aviation
Filed by: HEER617E
PHI Aviation, LLC
Aircraft: N498PH
Make and model: Bell 407
Aircraft serial: 53399
Aircraft time: 18,115 hours
Engine: Allsn 250C47B
Engine time: 9,772 hours
System (JASC): 7250 · Turbine Section
Part: Bearing
Part number: M25010106
Part serial: NWF140850
Condition: Spalled
Location: Turbine
Part time: 1,984 hours
Component: Turbine
Component part number: M25010557
Stage of operation: IN
How discovered: V
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

ENGINE REMOVED 9-26-15, DUE TO TURBINE O/H, COMPRESSOR N1 SHAFTING AND NR 2 BEARING, GB CEB 72-6081, PICCOLO TUBE, 150, 300 AND 2000 HR INSPECTIONS. REPLACED NR 5 BEARING DUE TO SPALLING ON OUTER RACE AT SPLIT. INSTALLED NEW NR 5 BEARING.

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