What was found
COLLECTIVE TORQUE TUBE HAS BOLT HOLES NOT DRILLED TO PROPER SIZE FOR GEARBOX MOUNT BOLTS TO BE PASSED THROUGH. TWO EACH PARTS FROM FACTORY BOTH UNDERSIZED HOLES.
- Difficulty date
- May 22, 1998
- Submitted
- March 26, 2000
- Operation
- General aviation
- Aircraft
- N521FB
- Make and model
- Hughes 500N
- Aircraft serial
- LN001
- System (JASC)
- 6710 · Main Rotor Control
- Part
- Torque Tube
- Part number
- 369A7306505
- Condition
- Misdrilled
- Location
- Collective
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- W
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.