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Date:Wednesday 15 December 1993
Type:Silhouette image of generic WW24 model; specific model in this crash may look slightly different
IAI 1124A Westwind II
Operator:Martin Aviation
Registration: N309CK
MSN: 350
First flight: 1981
Total airframe hrs:3027
Engines: 2 Garrett TFE731-3-1G
Crew:Fatalities: 2 / Occupants: 2
Passengers:Fatalities: 3 / Occupants: 3
Total:Fatalities: 5 / Occupants: 5
Aircraft damage: Destroyed
Aircraft fate: Written off (damaged beyond repair)
Location:6,5 km (4.1 mls) N of Santa Ana-John Wayne International Airport, CA (SNA) (   United States of America)
Phase: Approach (APR)
Departure airport:La Verne-Brackett Field, CA (POC/KPOC), United States of America
Destination airport:Santa Ana-John Wayne International Airport, CA (SNA/KSNA), United States of America
In-flight loss of control, rolled into a steep descent and crashed while on the final approach course for runway 19R. Wake turbulence from preceding Boeing 757 (United Airlines flight 103). The crew lacked specific wake turbulence training.

Probable Cause:

PROBABLE CAUSE: "The pilot-in-command's failure to maintain adequate separation behind the Boeing 757 and/or remain above its flight path during the approach, which resulted in an encounter with wake vortices from the 757. Factors related to the accident were: an inadequacy in the ATC procedure related to visual approaches and VFR operations behind heavier airplanes, and the resultant lack of information to the westwind pilots for them to determine the relative flight path of their airplane with respect to the Boeing 757's flight path."

Accident investigation:
Investigating agency: NTSB
Status: Investigation completed
Duration: 295 days (10 months)
Accident number: LAX94FA073
Download report: Summary report
Language: English

Weather: Wake vortex encounter
Loss of control

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This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from La Verne-Brackett Field, CA to Santa Ana-John Wayne International Airport, CA as the crow flies is 47 km (29 miles).
Accident location: Approximate; accuracy within a few kilometers.

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
  • 8th loss
  • 3rd fatal accident
  • 2nd worst accident (at the time)
  • 5th worst accident (currently)
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