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NTSB Report
February 19, 1990 · Short Brothers SD3-60 · N361MQ
Chicago, IL
Overview
Report Status
Probable Cause
Event Type
Incident
Date
February 19, 1990
Injury Outcomes
No injuries (16 uninjured)
Location
Chicago, IL
Aircraft
Short Brothers SD3-60
Tail Number
N361MQ
Operator
American Eagle
Injuries
None
Aircraft Damage
Minor
NTSB Number
CHI90IA084
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.
NTSB Probable Cause
FATIGUE FAILURE OF A FIRST STAGE POWER TURBINE BLADE.
Full Narrative
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.
Flight
Event TypeIncident
Event Time15:30 CST
Nearest AirportChicago O'Hare (0nm N)
Runway27
Runway Length10141 ft
Runway Width150 ft
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftShort Brothers SD3-60
Tail NumberN361MQ
Aircraft CategoryAir
DamageMinor
OperatorAmerican Eagle
Operating RulePart 121
Engines2
Engine TypeTurboprop
Engine DetailsP&W · PT6A-65AR · Turboprop · 1375
Seats22
People & Injuries
Injury SummaryNo injuries (16 uninjured)
Fatal0
Serious0
Minor0
Uninjured16
Total16
Crew 1Unknown
Conditions
ConditionsVMC
LightDaylight
Wind310° @ 12 kt
Visibility15 sm
CeilingNone
Temperature / Dew Point28 C / 10 C
Altimeter30.00 inHg
Observation Time21:50
Weather SourceWFAC