What was found
ENGINE REMOVED 12-25-18 DUE TO METAL IN OIL. DETERMINED CAUSE TO BE TURBINE NR 5 BEARING SPALLING. INSTALLED NEW BEARING. PART WILL BE RETURNED FOR EVALUATION ON SHIPPING NUMBER 4904011120191.
- Difficulty date
- January 11, 2019
- Submitted
- January 11, 2019
- Operation
- Air carrier
- Aircraft
- N433PH
- Make and model
- Bell 407
- Aircraft serial
- 53421
- Aircraft time
- 10,148 hours
- Engine
- Allsn 250C47B
- Engine time
- 13,441 hours
- System (JASC)
- 7250 · Turbine Section
- Part
- Bearing
- Part number
- M25010795
- Part serial
- NWB160052
- Condition
- Spalled
- Location
- Engine
- Part time
- 3,416 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.