What was found
T/R GEARBOX REMOVED DUE TO METAL IN OIL. FOUND OUTPUT DUPLEX BEARING P/N 212-040-456-001, S/N J6885, T.T. 1669:25 SPALLED. LUBRICATION PORT TO FEED BEARING, NOT PRESENT IN ABOVE MENTIONED CASE ASSY, CAUSING BEARING FAILURE.
- Difficulty date
- August 22, 1996
- Submitted
- March 26, 2000
- Operation
- Air carrier
- Aircraft
- N3893P
- Make and model
- Bell 412
- Aircraft serial
- 33012
- System (JASC)
- 6520 · Tail Rotor Gearbox
- Part
- Case Assy
- Part number
- 212040468001
- Condition
- Port Missing
- Location
- Bearing Lube
- Part time
- 5,934 hours
- Component
- 212040004009
- Stage of operation
- IN
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.