What was found
(CAN) DURING HEAVY MAINTENANCE THE IMPELLER RETENTION NUT WAS FOUND TO HAVE NO CLAMP-UP TORQUE ON THE IMPELLER AND THE WASHER BENEATH THE NUT COULD FLOAT FREELY. THE WITNESS MARK ON THE NUT TO THE SHAFT WAS STILL INTACT.
- Difficulty date
- March 14, 2013
- Submitted
- September 14, 2015
- Operation
- General aviation
- Make and model
- Bell 212
- Aircraft time
- 14,141 hours
- Engine
- Pwa PT6T3B
- System (JASC)
- 7921 · Engine Oil Cooler
- Part
- Blower
- Part number
- 209062502009
- Condition
- Loose
- Location
- Oil Cooler
- Stage of operation
- IN
- How discovered
- 9
- Nature of condition
- W
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.