What was found
DURING DAILY INSPECTION OF AIRCRAFT, MECHANIC FOUND HAIRLINE CRACK IN PAINT ON TAIL ROTOR GEARBOX. PAINT WAS REMOVED DYE PENETRANT INSPECTION WAS PERFORMED. CRACK WAS VERIFIED.
- Difficulty date
- September 22, 2016
- Submitted
- September 23, 2016
- Operation
- Air carrier
- Aircraft
- N766ME
- Make and model
- Bolkms BK117C2
- Aircraft serial
- 9066
- Aircraft time
- 6,674 hours, 20,508 cycles
- System (JASC)
- 6520 · Tail Rotor Gearbox
- Part
- Gearbox
- Part number
- 4639003009
- Part serial
- 891
- Condition
- Cracked
- Location
- Tail Rotor
- Part time
- 5,726 hours
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.