NONE · LEARJET · 2007-03-31 · Palm Springs, CA, USA
Event
NTSB number
ENG07IA018
Event ID
20081219X65330
Type
Incident
Date
2007-03-31
Location
Palm Springs, CA, USA
Coordinates
33.849185, -116.560287
Injuries
Highest injury
NONE
Fatal
0
Serious
0
Minor
0
Uninjured
3
Total aboard
3
Aircraft
Make
LEARJET
Model
—
Registration
N244FX
FAR Part
135
Engines
2
Damage
MINR
Conditions
Light
DAYL
Weather
VMC
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.