What was found
UPON REMOVAL OF TAIL ROTOR SHAFT FROM GEAR BOX, FOUND METAL PARTICLES INSIDE CASING & EXCESSIVE WEAR ON END SHAFT SPLINES. EROSION IS APPROX .090 FORM END INWARD & .030 DEEP.
- Difficulty date
- September 10, 2014
- Submitted
- September 11, 2014
- Operation
- Air carrier
- Aircraft
- N145HN
- Make and model
- Bolkms BK117C2
- Aircraft serial
- 9302
- Aircraft time
- 2,314 hours, 8,925 cycles
- Engine
- Tmeca ARRIEL1E2
- System (JASC)
- 6520 · Tail Rotor Gearbox
- Part
- Shaft
- Part number
- 10531803
- Part serial
- 82550
- Condition
- Damaged
- Location
- T/R Gearbox
- Part time
- 2,344 hours, 2,103 cycles
- Component
- Gearbox · Airbus
- Component part number
- 4639003009
- Stage of operation
- UK
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.