What was found
A MAINTENANCE INSPECTION OF THE M/R TRANSMISSION ASSY REVEALED CORROSION DUE TO WATER INTRUSION AND POOR VENTILATION. TRANSMISSION ASSY REPLACED; LIMITED TEST FLIGHT COMPLETED IAW 05-60-00, 6-1.
- Difficulty date
- August 27, 2021
- Submitted
- August 27, 2021
- Operation
- General aviation
- Filed by
- QR9R369D
M1 Support Services - Make and model
- Bolkms BK117C2
- Aircraft serial
- 0872077
- Aircraft time
- 1,639 hours
- System (JASC)
- 6320 · Main Rotor Gearbox
- Part
- Transmission
- Part number
- B632K1001051
- Part serial
- KA0837
- Condition
- Corroded
- Location
- Main Rotor
- Part time
- 1,639 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.