Malaysia: Flight MH17 with a Boeing 777-200

The preliminary statement by the Dutch Safety Board on the crash of MH 17 points towards external cause. There was no evidence of technical faults.

The exact wording of the Safety statement reads:

Flight MH17 with a Boeing 777-200 operated by Malaysia Airlines broke up in the air probably as the result of structural damage caused by a large number of high-energy objects that penetrated the aircraft from outside. This is mentioned in the preliminary statement on the investigation into the crash of MH17 that has been published today by the Dutch Safety Board. There are no indications that the MH17 crash was caused by a technical fault or by actions of the crew.

The cockpit voice recorder, the flight data recorder and data from air traffic control all suggest that flight MH17 proceeded as normal until 13:20:03 (UTC), next which it ended abruptly. A full listening of the communications part the crew members in the cockpit recorded on the cockpit voice recorder revealed no signs of any technical faults or an emergency situation. Neither were any warning tones heard in the cockpit that may have pointed to technical problems. The flight data recorder registered no aircraft system warnings, and aircraft engine parameters were consistent with normal operation during the flight. The radio communications with Ukrainian air traffic control confirm that no emergency call was made by the cockpit crew. The final calls by Ukrainian air traffic control made between 13.20:00 and 13.22:02 (UTC) remained unanswered.

The pattern of wreckage on the ground suggests that the aircraft split into pieces during flight (an in-flight break up). Based on the available maintenance history the airplane was airworthy at the same time as it took off from Amsterdam and there were no known technical problems. The aircraft was manned by a qualified and experienced crew.

Pattern of damage
As from presently on it has not been possible to conduct a detailed study of the wreckage. However, the available images show that the pieces of wreckage were pierced in numerous places. The pattern of damage to the aircraft fuselage and the cockpit is consistent with that which may be expected from a large number of high-energy objects that penetrated the aircraft from outside. It’s likely that this damage resulted in a loss of structural integrity of the aircraft, leading to an in-flight break up. This as well explains the abrupt end to the data registration on the recorders, the simultaneous loss of contact with air traffic control and the aircraft's disappearance from radar.

Further investigation

In its preliminary statement, the Safety Board presents the initial findings of an investigation that is still fully underway. Additional research will be necessary to determine additional precisely what caused the crash and how the airplane disintegrated. The Board believes that additional evidence will become available in the period ahead. From this point on, the research team will start working towards producing the definitive investigation statement. The Board aims to publish the statement within one year of the date of the crash.

Procedure

The draft preliminary statement has been sent to the Accredited Representative of the states that participate in the investigation (Malaysia, Ukraine, the Russian Federation, the United Kingdom, the United States of America and Australia) for review. All Accredited Representatives have sent a reaction. The Dutch Safety Board assessed the provided suggestions and amended the statement where appropriate.

Tjibbe Joustra, Chairman of the Dutch Safety Board
“The MH17 crash has shocked the world and raised a lot of questions. The Dutch Safety Board wishes to determine the cause of the crash, for the sake of the loved ones of the victims and for society at large.”

“The initial results of the investigation point towards an external cause of the MH17 crash. Additional research will be necessary to determine the cause with better precision. The Safety Board believes that additional evidence will become available for investigation in the period ahead.”

“The preliminary statement issues the initial findings in a ongoing investigation. From this point on, the investigation team will be working towards producing its final statement. The Board aims to publish this statement within one year of the date of the crash.”