What was found
(CAN) DURING A NORMAL O/H OF THE PUMP ASSY MPI INSP OF THE DRIVEN GEAR FOUND A CRACK ON THE TACH DRIVE END OF THE SHAFT. THE CRACK WAS IN THE CORNER OF THE SQUARE DRIVE. PUMP GEARS REPLACED.
- Difficulty date
- September 22, 2003
- Submitted
- November 2, 2004
- Operation
- General aviation
- Make and model
- Bell 206B
- Aircraft time
- 10,738 hours
- Engine
- Allsn 250C20B
- System (JASC)
- 2913 · Hydraulic Pump (Electric/Engine), Main
- Part
- Drive Gear
- Part number
- 8505141
- Condition
- Cracked
- Location
- Tach Drive
- Component
- Hydraulic Pump · Parkerhanfin
- Component part number
- 206076022101
- 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.