Incident · 2011-05-21
What the record says
- Event date
- 2011-05-21
- Event type
- Incident
- Highest injury level
- No injuries
- Aircraft
- DEHAVILLAND DHC-6-300 (N178GC)
- Operating rule
- Part 135
- Operator
- CORTEZ FISHER LLC Operator named in NTSB report
- Operated by (per NTSB report)
- CORTEZ FISHER LLC
Probable cause
A quality control failure in the Sungear, Inc. manufacturing and quality control process allowed sungears with surface finishes of the root fillet radius of the spline that did not conform to the drawing specifications to be released. The surface finish defect caused fatigue cracks to initiate early in the part life.
Source: NTSB case ENG11IA032Flight 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.