What was found
(AUS) MAIN ROTOR BRAKE QUILL PINION GEAR CRACKED FOR APPROXIMATELY 75 PERCENT ACROSS GEAR FACE. TRANSMISSION CHIP DETECTOR ACTIVATED. INSPECTION OF CHIP DETECTOR AND FILTER FOUND NO SIGNIFICANT CONTAMINATION.
- Difficulty date
- July 31, 2003
- Submitted
- September 4, 2003
- Operation
- General aviation
- Make and model
- Bell 412
- Engine
- Pwa PT6T3
- System (JASC)
- 6321 · Main Rotor Brake
- Part
- Pinion Gear
- Part number
- 412040301101
- Condition
- Cracked
- Location
- Main Rotor Brake
- Part time
- 2,458 cycles
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.