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Last updated: 19 December 2018
Status:Schlussbericht
Datum:Montag 21 April 1958
Zeit:08:30
Flugzeugtyp:Silhouette image of generic DC7 model; specific model in this crash may look slightly different
Douglas DC-7
Fluggesellschaft:United Airlines
Kennzeichen: N6328C
Werknummer: 45142/745
Baujahr: 1956
Besatzung:Todesopfer: 5 / Insassen: 5
Fluggäste:Todesopfer: 42 / Insassen: 42
Gesamt:Todesopfer: 47 / Insassen: 47
Opfer des Zusammenstoßes:Todesopfer: 2
Sachschaden: Zerstört
Konsequenzen: Written off (damaged beyond repair)
Unfallort:nahe Arden, NV (   USA)
Flugphase: Während des Fluges (ENR)
Betriebsart:Inländischer planmäßiger Passagierflug
Flug von:Los Angeles International Airport, CA (LAX/KLAX), USA
Flug nach:New York-Idlewild International Airport, NY (IDL/KIDL), USA
Flugnummer:UA736
Unfallbericht:
United Air Lines Flight 736, a Douglas DC-7, took off from Los Angeles, California at 07:37 on an IFR flight to New York-Idlewild Airport with a planned cruising altitude of FL210.
At about 07:45 a US Air Force North American F-100F-5-NA Super Sabre fighter (56-3755) took off from Nellis Air Force Base on an instrument training flight. During the exercise the flight was executing a simulated jet penetration in the area of Las Vegas, NV. At 08:30 the fighter plane pilot reported that they were descending from FL280 near the KRAM radio station. At the same time, United flight 736 was approaching the Las Vegas VOR. Both aircraft collided at FL210, 9 miles south west of the Las Vegas VOR station on Victor Airway 8. Initial contact occurred between the leading edge of the DC-7 right wing and the leading edge of the F-100 right wing, 132 inches outboard of the aircraft centreline. It was determined that the DC-7 was flying at about 312 knots on a 23 degree heading and the F-100 at 444 knots on a 145 degree heading. Assuming a small descent angle of the F-100, the closure speed was about 665 knots. Both planes crashed out of control.

Probable Cause:

PROBABLE CAUSE: "A high rate of near head-on closure at high altitude; human and cockpit limitations; and the failure of Nellis Air Force Base and the Civil Aeronautics Administration to take every measure to reduce a known collision exposure."

Informationsquelle:
» ICAO Accident Digest, Circular 59-AN/54 (121-128)


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Map
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 Los Angeles International Airport, CA to New York-Idlewild International Airport, NY as the crow flies is 3948 km (2468 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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Douglas DC-7

  • 339 built
  • 6th loss
  • 4th Fataler Unfall
  • 2nd worst accident (Zu diesem Zeitpunkt)
  • 7th worst accident (Momentan)
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