Learjet 35A Teterboro Runway 1 Approach Crash • NTSB Animation

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Credit: National Transportation Safety Board - NTSB

Crash During Circling Approach to Runway 1 at Teterboro Airport Teterboro Airport Teterboro, New Jersey May 15, 2017 CEN17FA183

This two-dimensional animated reconstruction shows the sequence of events in the accident, which occurred on May 15, 2017, about 1529 eastern daylight time, when a Learjet 35A, N452DA, departed controlled flight while on a circling approach to runway 1 at Teterboro Airport, Teterboro, New Jersey.

The sequence of events was reconstructed based on information from radar data, the airplane’s Enhanced Ground Proximity Warning System (EGPWS), the airplane’s cockpit voice recorder (CVR) transcript, Air Traffic Control (ATC) radio communications, and aircraft performance data. Selected comments from the CVR transcript and ATC communications are displayed as text along with the time they occurred. A sequence of still-image map graphics is used to provide an overview of the circumstances of the accident and the plane’s position as time advanced. Still images are followed by a continuous animation of the accident airplane, beginning from 15:27 to the time of the accident at 15:29. The animation does not depict the weather or visibility conditions.

The animation is then followed by a video clip showing the airplane crashing in a parking lot less than one mile southwest of the Teterboro airport. The animation includes audio replay of ATC communications and audio narration. The animation begins with a picture of the accident aircraft, a Learjet 35A, N452DA. An overall map of the area shows the origin of the flight at Philadelphia International Airport, Philadelphia, Pennsylvania, to the destination at Teterboro airport, Teterboro, New Jersey, with a straight-line distance of about 80 nautical miles and a flight time of about 25 minutes.

The filed flight plan with a requested altitude of twenty-seven thousand feet for a planned distance of about 120 nautical miles is depicted in white, and the Air Traffic Control cleared route to fly at four-thousand feet is shown in blue. Subsequently, the airplane’s actual ground track is shown at selected times over the course of the flight by a white arrow indicating the airplane’s position and heading, and the magenta line tracing the ground track.

The wide area map view is changed to a more focused map view displaying the four airports in the area: Teterboro Airport, Newark Liberty International Airport, John F. Kennedy International Airport, and LaGuardia Airport. The location of MetLife stadium south of Teterboro Airport and the navigational waypoints VINGS, DANDY and TORBY are also indicated. Ground tracks of previous aircraft flying the same circling approach that was assigned to the accident airplane are presented as white lines to show typical approach paths.

Wind direction and speed is indicated. The orientation for the Instrument Landing System (ILS) localizer for runway 6 is indicated, and the waypoint TORBY is highlighted as the waypoint where airplanes were typically told to begin the circling approach to runway 1. The map view again changes to an even more focused map view concentrating on the last 2 minutes of the flight as the airplane approached Teterboro Airport.

The position of the airplane is depicted in a continuous real time animation. The right side of the screen shows selected statements from the CVR and ATC transcript as text appearing at the time indicated in the transcript. The statements are attributed to the Captain, the SIC (Second-in-Command) and New York approach (APP-NYC) or Teterboro tower (TWR-TEB).

The airplane’s airspeed and altitude are indicated at the bottom of the frame, along with the local time. The animation transitions to a video captured by a security camera showing the airplane as it impacted the ground at a right bank angle of about 125 degrees.

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