What was found
FOUND MAST ASSY. CORRODED IN AREA WHERE BEARING IS SEATED AND INSIDE VALLEY AREA ABOVE BEARING SEAT. CORROSION PITTING BEYOND 412 BHT CR&O LIMITS. SCRAPPED MAST.
- Difficulty date
- May 4, 2004
- Submitted
- May 4, 2004
- Operation
- Air carrier
- Make and model
- Bell 412EP
- Aircraft serial
- 36273
- Aircraft time
- 2,489 hours
- System (JASC)
- 6230 · Main Rotor Mast/Swashplate
- Part
- Mast
- Part number
- 412040101129
- Part serial
- A386
- Condition
- Corroded
- Location
- Main Rotor
- Part time
- 2,489 hours, 16,454 cycles
- Component
- Mast Assy.
- Component part number
- 412040366113
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.