What was found
CASE CRUSHING OR SPALLING WITH CRACKS. COMPONENT COMING DUE 3600 HR TBO. SUBMITTED FOR ROUTINE OVERHAUL. DEFECTS FOUND DURING NORMAL DETAIL BENCH INSPECTION. COMPONENT HAS A 10,800 HOUR SERVICE LIFE LIMIT. (K)
- Difficulty date
- June 28, 2005
- Submitted
- August 23, 2005
- Operation
- General aviation
- Aircraft
- N117BK
- Make and model
- Bolkms BK117B2
- Aircraft serial
- 7229
- Engine
- Lyc LTS101*
- System (JASC)
- 6520 · Tail Rotor Gearbox
- Part
- Bevel Gear
- Part number
- 4639310062
- Part serial
- 862
- Condition
- Cracked
- Location
- T/R Gearbox
- Part time
- 3,544 hours
- Component
- Gearbox
- Component part number
- 4639002005
- Stage of operation
- IN
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.