What was found
(CAN) WHILE REMOVING THE ECS PULLEY TO CHANGE A OIL SEAL ON THE ECS PULLEY SHAFT THE ENGINEER NOTICED CORROSION ON THE BEARING. THE ECS PULLEY DRIVE SHAFT IS ALSO WORN SLIGHTLY UNDERSIZE.
- Difficulty date
- February 4, 2016
- Submitted
- April 22, 2016
- Operation
- General aviation
- Make and model
- Agusta AW139
- Aircraft time
- 1,281 hours
- Engine
- Pwc PT6C67C
- System (JASC)
- 6320 · Main Rotor Gearbox
- Part
- Bearing
- Condition
- Corroded
- Location
- Mr Gearbox
- Part time
- 1,230 hours
- Component
- Gearbox · Agusta
- Component part number
- 4G6320A00133
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.