What was found
MAST HAS PITTING CORROSION ON UPPER SPLINES BEYOND REPAIRABLE LIMITS.
- Difficulty date
- January 16, 2012
- Submitted
- January 17, 2012
- Operation
- Air carrier
- Aircraft
- N9YONE
- Make and model
- Bell 412EP
- Aircraft serial
- 36421
- Aircraft time
- 5,034 hours
- Engine
- Pwa PT6T3
- System (JASC)
- 6320 · Main Rotor Gearbox
- Part
- Mast
- Part number
- 412040101129A
- Part serial
- A857
- Condition
- Corroded
- Location
- Zone 200
- Part time
- 4,982 hours
- 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.