UK investigators have recovered the combined flight-data and cockpit-voice recorder from the Leonardo Helicopters AW169 that crashed in Leicester on the evening of 27 October.
The device was retrieved the following day and transported back to the organisation's Farnborough base for analysis, the Air Accidents Investigation Branch says.
Work has begun to extract data from the recorder, although the AAIB cautions that it was "subject to intense heat as a result of the post-accident fire".
Wreckage from the crash is due to be removed to Farnborough by the end of the week, it adds.
Leicestershire police have confirmed that all five people on board the helicopter – including Leicester City football club owner Vichai Srivaddhanaprabha – were killed as it came down shortly after departure from the football club's stadium.
It is the first accident involving an AW169 since the medium-twin entered service in 2015. Leonardo says it is assisting the inquiry.
Flight Fleets Analyzer records the helicopter (G-VSKP) as bearing serial number 69018 – the 12th serial AW169 to be built.
A company called Foxborough is listed as the AW169's owner, with Surrey-based Amadeus Aviation the operator.
UK companies records show the sole director of Amadeus Aviation is Philip Amadeus.
In an unfortunate coincidence, another company run by Amadeus – Rotormotion UK – was the operator of an AW109E (G-CRST) that crashed in London in January 2013 after hitting a crane in poor visibility.
Fleets Analyzer lists 62 examples of the AW169 as being in service globally. Of the 12 remaining examples in the UK, the majority are operated in the air ambulance role.