Preliminary report: CRJ-900 accident of Delta/Endeavor in Toronto

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At NTB of Canada published the preliminary report of the plane crash of a CRJ-900 of Endeavor operating to Delta Air Lines on Toronto. Foto The Canadian Press

This preliminary report details the facts known to date on the accident occurred by the 17 February 2025 at Toronto/Lester B International Airport. Pearson. An MHI RJ Aviation Group CL-600-2D24 aircraft (CRJ-900LR), Operated by Endeavor Air as flight EDV4819, suffered a serious accident during landing. This document provides a summary of the events that led to the accident, the damage suffered by the aircraft and the initial findings of the investigation carried out by the Transportation Safety Board of Canada (TSB). The information contained in this report is preliminary and is subject to change as the investigation progresses..

PRELIMINARY REPORT OF DELTA CRJ-900 IN TORONTO

The 17 February 2025, an MHI RJ Aviation Group CL-600-2D24 aircraft (CRJ-900LR), Operated by Endeavor Air (dba Delta Connection) as flight EDV4819, suffered a serious accident during landing at Toronto/Lester B International Airport. Pearson (CYYZ), Ontario. The aircraft impacted the runway with considerable force., which caused the detachment of the right wing and the rapid spread of a fire. The plane, out of control, overturned and slid down the track in an inverted position, creating a chaotic and dangerous scene. Finally, The aircraft stopped near the runway intersection 23 and track 15L. Rescue and firefighting services (Arm) They immediately went to the accident site and managed to control the fire, in addition to starting the evacuation work of the occupants.

• Date and time: 17 February 2025, 14:12:43.6 (Eastern Standard Time)
• Location: Toronto/Lester B International Airport. Pearson (CYYZ), Ontario, Canada
• operators: Endeavor Air (dba Delta Connection)
• aircraft: MHI RJ Aviation Group CL-600-2D24 (CRJ-900LR)
• Serial Numbers: 15194
• Registration: N932xj
• Flight number: EDV4819
• Damage to the Aircraft: The right wing detached from the fuselage upon initial impact.. The aircraft suffered serious structural damage when it overturned and slid down the runway., finally remaining in an inverted position. A significant fire occurred, primarily affecting the right wing and other areas of the aircraft..
• Victims: Of the 80 occupants (2 Flight crew, 2 cabin crew, 76 passengers), 21 were injured to varying degrees. Two of the injured suffered injuries that were classified as serious.

Summary of the flight

Flight EDV4819 began its journey at Minneapolis-Saint Paul/Wold-Chamberlain International Airport (KMSP), Minnesota, USA, bound for Toronto/Lester B International Airport. Pearson (CYYZ). Takeoff took place at 12:47 (Eastern Standard Time). The flight passed without any significant incidents during the cruise phase.. The crew received authorization to carry out the Instrument Landing System approach (ILS) to the track 23 The cyyz. The landing reference speed (VREF) for the approximation it was 139 knots. Nevertheless, During the final landing phase, the aircraft experienced a sudden change in flight conditions, including gusts of wind, which complicated the maneuver.

At 14:12:40 (3,6 seconds before landing), When the aircraft was at a height of 15,2 M on the ground (AGL), The indicated airspeed was 145 knots and speed with respect to the ground, from 112 knots. The descent speed had increased to 25,4 m/my. The “fifty” audible alert of the enhanced ground proximity warning system (Egpws) sounded to indicate that the aircraft was at 15,2 M on the ground, which is a standard indication.

a second later (2,6 seconds before landing), The EGPWS “descent rate” alert sounded, indicating a high descent speed. The indicated airspeed of the aircraft was 136 knots, its speed with respect to the ground, from 111 knots, and the rate of descent had remained around 25,4 m/my. Bank angle increased to 4.7° right. The engine thrust remained stable, approximately to 43 % N1.

At 14:12:42 (1,6 seconds before landing), The indicated airspeed of the aircraft was 136 knots and its speed with respect to the ground was 111 knots. The aircraft was slightly below the planning path, but in the visual segment of the approach and following the runway axis. The descent speed had increased to 1072 feet per minute (fpm) and the bank angle was 5.9° to the right.

Less than 1 second before landing, The indicated airspeed of the aircraft was 134 knots and its speed with respect to the ground was 111 knots. The bank angle was 7.1° to the right and the pitch attitude was 1° nose up.. The registered descent speed was 1110 feet per minute (fpm).

At 14:12:43,6, The main landing train (MLG) right hit the track. The aircraft was in a pitch of 7.5° to the right with a 1° nose-up pitch and a vertical acceleration of 3 g, at a rate of descent of approximately 1098 feet per minute (18,3 feet per second).

upon landing, the following happened: the side forestay attached to the right MLG fractured, the landing gear folded, the wing root fractured between the fuselage and landing gear, and the wing detached from the fuselage, releasing a cloud of fuel that caught fire. The exact sequence of these events will still be determined by closer examination of the fracture surfaces..

The aircraft then began to slide down the runway.. The fuselage slid down the runway 23, turning right until they are invested. A large part of the tail, including most of the vertical stabilizer and all horizontal stabilizer, came off during the turn.

Preliminary research findings

Preliminary investigation into Delta crash in Toronto has revealed the following key findings:

• Impact with high descent rate: The aircraft impacted the runway with a descent rate of approximately 1098 feet per minute (18.3 feet per second), which exceeds the design limits of the landing gear.
• Landing gear fracture: The right main landing gear (MLG) suffered a fracture at the time of initial impact, specifically in the connection of the side support to the landing gear strut.
• Wing detachment: The right wing separated from the fuselage as a result of the impact and the landing gear fractured.. Wing detachment caused fuel release, which contributed to the spread of the fire.
• Fire: A significant fire broke out following wing detachment and fuel release. The fire caused considerable damage to the aircraft, especially in the right wing area.
• Inverted aircraft: After the impact and collapse of the landing train, The aircraft slid down the runway and ended up overturning, remaining in an inverted position.
• Non-activation of the ELT: Despite being armed, emergency locator transmitter (ELT) did not activate during the accident sequence. This fact is being investigated further..
• Meteorological conditions: Weather conditions at the time of the accident included strong winds with gusts and snow., What could have contributed to the difficulty of the landing maneuver.

Ongoing research areas

The accident investigation remains ongoing and several areas are being thoroughly examined to determine the exact causes and contributing factors.. Some of the ongoing research areas include:

• Detailed metallurgical examination of wing structure and landing gear components to determine failure modes and materials integrity.
  Review of aircraft certification and maintenance processes, including the landing train and wing structure.
  Analysis of evacuation and emergency exit procedures, including the effectiveness of emergency exits and the challenges faced by occupants during evacuation.
• Evaluation of flight deck door structure and design, as well as the secondary exit route from the flight deck.
• Analysis of landing techniques, hard landings and pilot training, including crew response to wind conditions and descent rate management.
• Investigation of obstructions and impediments that may have made evacuation of the cabin difficult once the aircraft was inverted.
• Evaluation of the organizational and management factors that could have influenced the accident.
• Review of the training of flight attendants and their performance during the emergency.
• Analysis of coordination in emergencies between the crew, air traffic controllers and ground emergency services.
• Evaluation of the actions of the ARFF and the medical emergency technical personnel (EMT) After the accident, including the effectiveness of response and emergency management.

The Transportation Safety Board of Canada (TSB) is leading the investigation in collaboration with other relevant organizations and agencies, including Canada Transport, The National Transportation Security Board of the United States (NTSB), the Federal Aviation Administration (FAA), Delta Air Lines, Endeavor Air, MHI RJ Aviation Group, GE Aerospace, the Airline Pilots Association, Collins Aerospace and the Association of Flight Attendants-CWA. The main objective of the investigation is to determine the causes of the accident and formulate safety recommendations to prevent future similar incidents and improve air transport safety..

You can read the preliminary report on this link: https://www.tsb.gc.ca/eng/rapports-reports/aviation/2025/a25o0021/a25o0021-preliminary.html

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