What was found
(CAN) DURING SHUTDOWN, ROTORS TURNING LOUD CLICKING HEARD FROM COUPLING WHILE ROTORS WERE SLOWING DOWN. COUPLING FOUND CRACKED IN 3 PLACES ALL AROUND, AND GOING THROUGH THE CRIMPED BUSHINGS OF THE OUTER DISK.
- Difficulty date
- July 22, 2015
- Submitted
- April 22, 2016
- Operation
- General aviation
- Make and model
- Snias AS350B2
- Aircraft time
- 12,487 hours
- Engine
- Lyc LTS101700D2
- System (JASC)
- 6310 · Engine/Transmission Coupling
- Part
- Flex Coupling
- Part number
- 350A35105901
- Condition
- Cracked
- Location
- Main Rotor Drive
- 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.