NONE · DEHAVILLAND DHC-6-300 · 2011-05-21 · Peach Springs, AZ, USA
Event
NTSB number
ENG11IA032
Event ID
20110613X64905
Type
Incident
Date
2011-05-21
Location
Peach Springs, AZ, USA
Coordinates
35.197776, -114.054443
Injuries
Highest injury
NONE
Fatal
0
Serious
0
Minor
0
Uninjured
17
Total aboard
17
Aircraft
Make
DEHAVILLAND
Model
DHC-6-300
Registration
N178GC
FAR Part
135
Engines
2
Damage
—
Conditions
Light
DAYL
Weather
VMC
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.