What was found
PILOT REPORTED OIL RESIDUE ON TAIL ROTOR GEARBOX & SCRATCH ON LEADING SIDE NEAR LT BOLT AFTER FLIGHT. MECHANIC INSPECTED & FOUND CRACK AFT OF LT AFT BOLT & TAIL ROTOR GEARBOX 1/4 QT LOW ON OIL.
- Difficulty date
- September 4, 2014
- Submitted
- September 5, 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
- Gearbox
- Part number
- 4639003009
- Part serial
- 1184
- Condition
- Cracked
- Location
- Tail Rotor
- Part time
- 2,344 hours, 2,103 cycles
- Stage of operation
- UK
- How discovered
- O
- Nature of condition
- K
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.