July 23, 2014 1:37 PM EDT
A team of investigators led by the Dutch Safety Board said in a report Wednesday there’s “no evidence” that Malaysia Airlines Flight 17’s cockpit voice recorders had been manipulated after the crash.
The Dutch Safety Board requested that the Air Accident Investigation Branch of the United Kingdom (AAIB) analyze Flight 17’s data recorders, also known as “black boxes” despite their typically bright orange color.
Many observers were concerned the black boxes — which include a cockpit voice recorder as well as a flight data recorder — were somehow tampered with by pro-Russia Ukrainian rebels who control the scene of the crash. Speculation that said rebels may have been responsible for shooting down Flight 17, some say, was a potential incentive for the rebels to damage or destroy the devices to hinder an investigation.
Malaysia Airlines Flight 17, a Boeing 777, crashed July 17 in eastern Ukraine, killing all 298 on board.
Scenes from the crash site of Malaysia Airlines Flight 17 A woman cries during a religious service held by villagers in memory of the victims at the crash site of Malaysia Airlines Flight 17, near the village of Hrabove, eastern Ukraine, July 22, 2014. Vadim Ghirda—AP Members of a Dutch forensics team prepare to inspect rail cars where the bodies of the Malaysia Airlines Flight 17 crash victims were being held in Torez, Ukraine, July 21, 2014. Mauricio Lima—The New York Times/Redux The bodies of victims of the crash of Malaysia Airlines flight MH17 arrive at the Torez train station in the back of a truck to be loaded into a refrigerated train car on July 21, 2014 in Torez, Ukraine. Brendan Hoffman—Getty Images Local residents gather to watch as the bodies of victims of Malaysia Airlines Flight 17 are removed from the scene of the crash on July 21, 2014 in Grabovo, Ukraine. Brendan Hoffman—Getty Images Personnel from the Ukrainian Emergencies Ministry load the bodies of victims of Malaysia Airlines flight MH17 into a truck at the crash site on July 21, 2014 in Grabovo, Ukraine. Brendan Hoffman—Getty Images An armed pro-Russian separatists gestures as he blocks the way to the crash site of Malaysia Airlines Flight MH17, near the village of Grabove, in the region of Donetsk on July 20, 2014. Bulent Kilic—AFP/Getty Images People search a wheat field for remains in the area of the crash site of Malaysia Airlines Flight 17 near the village of Hrabove, July 20, 2014. Vadim Ghirda—AP Emergency workers carry a body at the crash site of Malaysia Airlines Flight MH17, near the settlement of Grabovo in the Donetsk region, July 19, 2014. Maxim Zmeyev—Reuters A rose lies on a plastic sheet covering a victim of a Malaysia Airlines Boeing 777 plane which was downed on Thursday near the village of Rozsypne, in the Donetsk region July 18, 2014. Maxim Zmeyev—Reuters Miners inspect a piece of debris found in a field from the Malaysia Airlines plane on July 18, 2014 in Grabovka, Ukraine. Brendan —Getty Images A group of miners prepare to search a field for debris and human remains from the Malaysia Airlines plane on July 18, 2014 in Grabovka, Ukraine. Brendan Hoffman—Getty Images A man looks at debris from the Malaysia Airlines plane crash on July 18, 2014 in Grabovka, Ukraine. Brendan Hoffman—Getty Images Self-proclaimed Prime Minister of the pro-Russian separatist "Donetsk People's Republic" Alexander Borodai stands as he arrives on the site of the crash of a malaysian airliner carrying 298 people from Amsterdam to Kuala Lumpur, near the town of Shaktarsk, in rebel-held east Ukraine, on July 17, 2014. Dominique Faget—AFP/Getty Images People walk amongst the debris at the crash site of a passenger plane near the village of Grabovo, Ukraine, July 17, 2014. Dmitry Lovetsky—AP People walk amongst the debris at the crash site of a passenger plane near the village of Grabovo, Ukraine, July 17, 2014. Dmitry Lovetsky—AP The site of a Malaysia Airlines Boeing 777 plane crash is seen near the settlement of Grabovo in the Donetsk region, July 17, 2014. Maxim Zmeyev—Reuters An Emergencies Ministry member works at putting out a fire at the site of a Malaysia Airlines Boeing 777 plane crash in the settlement of Grabovo in the Donetsk region, July 17, 2014. Maxim Zmeyev—Reuters Smoke rises from where a Malaysia Airlines commercial plane crashed in eastern Ukraine on July 17, 2014. Andrei Kashtanov—AP The wreckage of the Malaysian airliner carrying 295 people from Amsterdam to Kuala Lumpur after it crashed on July 17, 2014 near the town of Shaktarsk, in rebel-held east Ukraine. Zuran Dzhavakhadze—AFP/Getty Images Luggage seen at the crash site the Malaysian airliner carrying 298 people from Amsterdam to Kuala Lumpur, near the town of Shaktarsk, in rebel-held east Ukraine, July 17, 2014 Dominique Faget—Getty Images A woman and child walk past the crash site of a passenger plane near the village of Grabovo, Ukraine, July 17, 2014. Dmitry Lovetsky—AP The wreckage of the Malaysian airliner carrying 295 people from Amsterdam to Kuala Lumpur after it crashed, near the town of Shaktarsk, in rebel-held east Ukraine, July 17, 2014. Dominique Faget—AFP/Getty Images More Must-Reads from TIME