What was found
TURBINE REMOVED 11-7-14 FOR OVERHAUL. REMOVED NR 5 BEARING DUE TO SPALLING ON BALL AND PROBABLE SPALLING ON OUTER RACE AT SPLIT. SCRAPPED PART AND REPLACED WITH NEW. PART WILL BE RETURNED TO MFG FOR FURTHER EVALUATION.
- Difficulty date
- November 14, 2014
- Submitted
- November 14, 2014
- Operation
- General aviation
- Filed by
- HEER617E
PHI Aviation, LLC - Aircraft
- N740PH
- Make and model
- Bell 407
- Aircraft serial
- 53435
- Aircraft time
- 14,475 hours
- Engine
- Allsn 250C47B
- Engine time
- 10,716 hours
- System (JASC)
- 7250 · Turbine Section
- Part
- Bearing
- Part number
- M25010106
- Part serial
- NWK120890
- Condition
- Spalled
- Location
- Turbine
- Part time
- 1,973 hours
- Component
- Turbine
- Component part number
- 23063354
- 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.