The aircraft, a former military Alouette helicopter, crashed at Breighton Aerodrome, near Selby, on 17 July during a private flight.
|Helio type seen in the opening credits of the MASH TV series..|
All five men suffered head, back, chest and leg injuries in the crash.
The AAIB said it was sending investigators to the site after "one of the persons on board passed away".
Investigators had up to now been carrying out the inquiry by correspondence, without a formal requirement to visit he crash site. The crashed helicopter was within hours removed to a secure location.
The AAIB said in a brief statement it had now become a "field investigation" following the death, and that "a team of inspectors had been appointed to fully investigate the helicopter accident at Breighton on 17 July." The investigation therefore remains with the AAIB but the findings, will now also additionally be reported to the coroner and police, although police say they are not currently investigating.
Source BBC News, BBC York, CNS,
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