What was found
IN CRUISE, PILOT DETECTED VIBRATION / LOW RUMBLING NOISE FROM AFT AREA OF AIRCRAFT. NOISE/VIBRATION INCREASED WITH INCREASE IN POWER. MAINTENANCE INSPECTED AND FOUND NR 2 SHAFT / OIL COOLER ASSY AFT BEARING FAILURE.
- Difficulty date
- January 2, 2002
- Submitted
- January 21, 2002
- Operation
- General aviation
- Aircraft
- N3193E
- Make and model
- Bell 407
- Aircraft serial
- 53276
- System (JASC)
- 6300 · Main Rotor Drive System
- Part
- Bearing
- Part number
- 407340339101
- Part serial
- ZV10655
- Condition
- Failed
- Location
- Main Rotor
- Part time
- 140 hours
- Stage of operation
- CR
- 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.