POCAHONTAS, AR, USA
N4913X
Rockwell S-2R
ABOUT 18 INCHES OF ONE PROPELLER BLADE SEPARATED IN FLIGHT. THE ACFT BEGAN TO SHAKE VIOLENTLY AND THE PLT SHUTDOWN THE ENGINE. THE AIRCRAFT CRASHED DURING THE FORCED LNDG. METALLURGICAL EXAMINATION REVEALED FEATURES TYPICAL OF FATIQUE CRACKING OVER APROX 2/3 OF BLADE CROSS SECTION AT THE FRACTURE LOCATION.
Source: NTSB Aviation Accident Database
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