May 13, 2014
Incident
Minor Sugar Land, TX
InjuriesNone
Phase of Flight-
ConditionsUnk
OperationFAR 091
Probable Cause
The probable cause of the uncontained No. 2 engine failure on the Raytheon Beechjet 400A was a yellow-crowned night-heron birdstrike that resulted in fan blade contact with the inlet case and rub induced excitation of a previously unidentified natural frequency (resonance) within the engine operating range.
NTSB ENG14IA013