Aviation Accident Summary CHI90IA084

CHICAGO, IL, USA

Aircraft #1

N361MQ

SHORT BROTHERS SD3-60

Analysis

THE AIRCRAFT WAS ON FINAL FOR LANDING AT O'HARE INTERNATIONAL AIRPORT. OVER THE LANDING THRESHOLD THE PILOT REPORTED THAT HE HEARD A SERIES OF SMALL POPS AND A LOUD POP FROM THE NUMBER 1 ENGINE FOLLOWED BY A TORQUE DECAY. THE ENGINE WAS FEATHERED ON TOUCHDOWN. THE INVESTIGATION REVEALED A FATIGUE FAILURE OF A TURBINE BLADE IN THE FIRST STAGE POWER TURBINE.

Probable Cause and Findings

FATIGUE FAILURE OF A FIRST STAGE POWER TURBINE BLADE.

 

Source: NTSB Aviation Accident Database

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