The Beeb has now published an updated version of the story (with a different URL, surprisingly for them:
https://www.bbc.co.uk/news/uk-england-devon-60630871) with the following added details:
An 87-year-old woman who died during a helicopter landing was blown over while walking on a footpath, police said.
Devon and Cornwall Police said it was continuing to investigate the incident at Derriford Hospital on Friday.
The "down draft" from the landing helicopter caused the woman, from Plymouth, to be blown over, the force added.
Another woman, also in her 80s, suffered a broken pelvis and remains in hospital in a stable condition.
The HM Coastguard helicopter, which was landing at the helipad at the hospital at about 11:20 GMT, was carrying a casualty linked to a separate incident.
"Whilst the helicopter was in the process of landing on the helipad, the down draft caused one member of the public, an 87-year-old woman from the Plymouth area who was on near-by footpath, to be blown over", Det Insp Hodges said.
She suffered a serious head injury and died at Derriford Hospital in Plymouth.
The other injured woman was in the car park when it is believed the down draft also caused a car door to slam shut while she was getting out of the vehicle, Devon and Cornwall Police said.
EDIT: Just beaten by Jim's ITV version!