- Difficulty date
- February 6, 2024
- Submitted
- February 7, 2024
- Operation
- General aviation
- Make and model
- Bolkms BK117C2
- Aircraft serial
- 9161
- Aircraft time
- 9,444 hours, 42,056 cycles
- Engine
- Tmeca ARRIEL1E2
- Part
- Oil Cooler
- Part number
- 1176802103
- Condition
- Sheared
- Location
- M/R Gearbox
- Component
- Main Gearbox/Xm · Bolkms
- Stage of operation
- AA
- How discovered
- O
- Nature of condition
- M, J
- Precautionary procedure
- E, A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
#2 ENG OIL COOLER, SUSPECTED SHAFT BROKEN. REPORTED #2 ENG OIL TEMP FLUCTUATION. INSP REVEALED #2 ENG OIL COOLER SHAFT SHEARED. REM'D #2 OIL COOLER FAN ASSY. INSTALLED SERVICEABLE FAN ASSY, P/N SAME. PERFORMED GROUND RUN/LEAK CHK W/NO ANOMALIES. ACFT RETURNED TO SERVICE.