What was found
RETENTION LOCK-CUP FAILED. NUT LOOSENED CAUSING FLANGE TO WEAR A GROOVE INTO SPEED INDICATOR PLUG OF PT ROTOR. PART OF THE LOCK-CUP CUT A PORTION OUT OF THE ELBOW CAUSING ENGINE TO LOSE POWER.
- Difficulty date
- June 4, 1999
- Submitted
- March 26, 2000
- Operation
- Air carrier
- Aircraft
- N527RM
- Make and model
- Bolkms BK117A4
- Aircraft serial
- 7111
- Engine
- Lyc LTS101650B1
- System (JASC)
- 7250 · Turbine Section
- Part
- Rotor Assy
- Part number
- 414129011
- Condition
- Damaged
- Location
- Power Turbine
- Part time
- 2,889 hours
- Stage of operation
- IN
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.