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Accident
Last updated: 24 October 2017
Status:Definitief
Datum:vrijdag 4 april 1986
Tijd:19:22
Type:Silhouette image of generic WW24 model; specific model in this crash may look slightly different
IAI 1124A Westwind II
Vloog voor:Integerresources Inc. & Drayton Ass.
Gehuurd van:Drayton Associates
Registratie: N50SK
Constructienummer: 309
Bouwjaar: 1980
Aantal vlieguren:2745
Motoren: 2 Garrett TFE731-3-1G
Bemanning:slachtoffers: 2 / inzittenden: 2
Passagiers:slachtoffers: 5 / inzittenden: 5
Totaal:slachtoffers: 7 / inzittenden: 7
Schade: Vernield
Gevolgen: Written off (damaged beyond repair)
Plaats:Redwater, TX (   Verenigde Staten)
Fase: Kruisvlucht (ENR)
Soort vlucht:Zaken
Vliegveld van vertrek:Dallas-Redbird Airport, TX (RBD/KRBD), Verenigde Staten
Vliegveld van aankomst:Teterboro Airport, NJ (TEB/KTEB), Verenigde Staten
Beschrijving:
Westwind N50SK departed Dallas-Redbird Airport at 18:56 CST under an IFR flightplan bound for Teterboro.
Upset at FL370 as a result of clear air turbulence associated with a VIP level 6 thunderstorm; entered an uncontrolled descent through the cell. Left main landing gear door broke off due to overstress striking the left horizontal stabilizer which separated.

Probable Cause:

PROBABLE CAUSE:
flight/nav instruments,weather radar system..failure,partial
weather condition..thunderstorm
weather condition..turbulence,clear air
weather condition..gusts
weather condition..downdraft
preflight briefing service..improper..atc personnel(fss)
hazardous weather advisory..not issued..atc personnel(fss)
in-flight weather advisories..not issued..atc personnel(fss)
information unclear..atc personnel(fss)
CONTRIBUTING FACTORS:
operation with known deficiencies in equipment..continued..pilot in command
light condition..dark night
excessive workload (task overload)..pilot in command
excessive workload (task overload)..copilot/second pilot

Accident investigation:
cover
Investigating agency: NTSB
Status: Investigation completed
Duration: 1 year and 10 months
Accident number: FTW86MA058
Download report: Summary report

Bronnen:
» NTSB


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Kaart
Deze kaart geeft het vliegveld van vetrek weer en de geplande bestemming van de vlucht. De lijn tussen de vliegvelden geeft niet de exacte vliegroute weer.
De afstand tussen Dallas-Redbird Airport, TX en Teterboro Airport, NJ bedraagt 2202 km (1376 miles).
Accident location: Exact; deduced from official accident report.

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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IAI 1124

  • 442 built
  • 4e ongeval
  • 2e dodelijk ongeval
  • The zwaarste ongeval
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