Incident · 2024-07-26
What the record says
- Event date
- 2024-07-26
- Event type
- Incident
- Highest injury level
- No injuries
- Aircraft
- BELL 407 (N793SF)
- Operating rule
- Part 135
- Operator
- VIKING AVIATION LLC Operator named in NTSB report
- Operated by (per NTSB report)
- Viking Aviation LLC
Probable cause
The loss of engine power due to high cycle fatigue failure of a power turbine stage 3 turbine wheel blade. The resulting engine imbalance caused a decoupling of the gas producer stage 1 and stage 2 turbine wheels leading to a stage 1 turbine overspeed and subsequent turbine wheel burst.
Source: NTSB case ENG24LA028Flight crew
No flight-crew details recorded in the NTSB accident database for this event.
Facts as the NTSB records them — GroundCheck adds no judgement. Preliminary records may be revised as the investigation proceeds.