Incident · 2007-08-12
What the record says
- Event date
- 2007-08-12
- Event type
- Incident
- Highest injury level
- No injuries
- Aircraft
- LEARJET (N244F)
- Operating rule
- Part 91
- Operator
- D and D Aviation, Inc. Operator named in NTSB report
- Operated by (per NTSB report)
- D&D Aviation
Probable cause
The fatigue fracture of the fan blade due to the blade vendor's improper setup of the forging dies, which resulted in fan blades with airfoils that were below the minimum thickness in the highest stressed area of the airfoil and resulted in operating stresses that exceeded the material's capability. Contributing to the incident was the engine manufacturer's lack of a dimensional inspection of the fan blade's airfoil.
Source: NTSB case ENG07IA034Flight crew
Flight-crew details for this event aren't in the NTSB database extract we hold (its coverage starts with 2008 events) — a gap in our data, not an absence of crew.
Facts as the NTSB records them — GroundCheck adds no judgement. Preliminary records may be revised as the investigation proceeds.