What was found
TURBINE REMOVED FOR CRACKED EXHAUST COLLECTOR. REMOVED NR 5 BEARING DUE TO PROBABLE SPALLING ON OUTER RACE AT SPLIT. SCRAP PART & REPLACE WITH NEW. PART WILL BE RETURNED FOR FURTHER EVALUATION.
- Difficulty date
- June 26, 2015
- Submitted
- June 26, 2015
- Operation
- Air carrier
- Aircraft
- N417PH
- Make and model
- Bell 407
- Aircraft serial
- 53038
- Aircraft time
- 13,247 hours
- Engine
- Allsn 250C47B
- Engine time
- 8,398 hours
- System (JASC)
- 7250 · Turbine Section
- Part
- Bearing
- Part number
- M25010106
- Part serial
- NWA140620
- Condition
- Spalled
- Location
- Engine
- Part time
- 881 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.