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NTSB Report
October 7, 1983 · Sikorsky S-61N · YV323
West Palm Beach, FL
Overview
Report Status
Preliminary report
Event Type
Accident
Date
October 7, 1983
Injury Outcomes
4 injuries (1 serious injury, 3 minor injuries)
Location
West Palm Beach, FL
Aircraft
Sikorsky S-61N
Tail Number
YV323
Operator
Aerotecnica
Injuries
Serious
Aircraft Damage
Destroyed
NTSB Number
MIA84FA004
WHILE DESCENDING FOR A LANDING THERE WAS A SEPARATION OF AN OUTBOARD SECTION OF THE MAIN RED ROTOR BLADE. AN OLD CRACK WAS NOTED & THE FRACTURE WAS ATTRIBUTED TO HIGH STRESS LOW CYCLE FATIGUE DAMAGE INITIATING FROM CORROSION PITTING.
Full Narrative
WHILE DESCENDING FOR A LANDING THERE WAS A SEPARATION OF AN OUTBOARD SECTION OF THE MAIN RED ROTOR BLADE. AN OLD CRACK WAS NOTED & THE FRACTURE WAS ATTRIBUTED TO HIGH STRESS LOW CYCLE FATIGUE DAMAGE INITIATING FROM CORROSION PITTING.
Flight
Event TypeAccident
Event Time19:16 EDT
Nearest AirportPalm Beach International (1nm ESE)
Runway0
Flight Plan FiledVFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftSikorsky S-61N
Tail NumberYV323
Aircraft CategoryHeli
DamageDestroyed
OperatorAerotecnica
Operating RulePart 103
Engines2
Engine TypeTurboshaft
Engine DetailsGe · CT-58-140-1 · Turboshaft · 1150
Seats8
People & Injuries
Injury Summary4 injuries (1 serious injury, 3 minor injuries)
Fatal0
Serious1
Minor3
Uninjured0
Total4
Crew 1Age 34 · First Class
Conditions
ConditionsVMC
LightDusk
Wind100° @ 7 kt
CeilingUnknown 30000 ft
Temperature / Dew Point0 C
Altimeter30.00 inHg
Observation Time23:00
Weather SourceWFAC