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Last updated: 18 September 2018
Datum:donderdag 1 oktober 1981
Type:Silhouette image of generic LJ24 model; specific model in this crash may look slightly different
Learjet 24
Luchtvaartmaatschappij:Sky Train Air
Registratie: N44CJ
Constructienummer: 24-146
Bouwjaar: 1967
Aantal vlieguren:7412
Motoren: 2 General Electric CJ610-4
Bemanning:slachtoffers: 2 / inzittenden: 2
Passagiers:slachtoffers: 1 / inzittenden: 1
Totaal:slachtoffers: 3 / inzittenden: 3
Schade: Afgeschreven
Gevolgen: Written off (damaged beyond repair)
Plaats:4 km (2.5 mijl) SW of Felt, OK (   Verenigde Staten)
Fase: Kruisvlucht (ENR)
Soort vlucht:Onbekend
Vliegveld van vertrek:Casper Airport, WY (CPR/KCPR), Verenigde Staten
Vliegveld van aankomst:McAllen-Miller International Airport, TX (MFE/KMFE), Verenigde Staten
The aircraft departed Casper, WY at 13:57 following a refueling stop. The Learjet climbed to a altitude of FL450. Around 3 pm control was lost and the airplane crashed near Felt, OK.

Probable Cause:

PROBABLE CAUSE: "A loss of control, possibly initiated by an unexpected encounter with moderate to severe clear air turbulence, which caused the aircraft to depart the narrow flight envelope boundaries in which it was operating and from which recovery was not effected, the flightcrew's lack of adequate training and experience in the Learjet; and the aircraft's marginal controllability characteristics near and beyond the boundaries of its flight envelope. Contributing to the accident was the flightcrew's probable extension of the spoilers in an overspeed situation, a procedure that had been prescribed in the approved aircraft flight manual until 1 year before the accident."

Accident investigation:
Investigating agency: NTSB
Status: Investigation completed
Duration: 229 days (8 months)
Accident number: NTSB-AAR-82-4
Download report: Final report


NTSB issued 19 Safety Recommendations

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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 Casper Airport, WY en McAllen-Miller International Airport, TX bedraagt 1991 km (1244 miles).

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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