Incident Overview
During the takeoff phase, a Learjet 36A encountered a bird strike that affected the right-hand engine. The impact caused structural damage to internal components, including fan blades and the oil tank.
Damage Assessment
One fan blade of the engine fractured below the mid-span point, while all other fan blades exhibited tears on their leading edges. Fragments from the liberated fan blade were ejected through the engine fan case at three distinct clocking locations, immediately forward of the fan containment ring.
One fragment passed through the top portion of the oil tank, creating a breach. Another ejected fragment penetrated the nacelle skin. However, neither fragment projected in the direction of the fuselage, limiting the damage solely to the nacelle structure.
Bird Identification
The bird involved in the strike was identified as a male mallard duck.