A fourth British tourist has died following the helicopter crash in the Grand Canyon on February 10.
Jonathan Udall, who was in his 30s and from Brighton, had been in hospital in Las Vegas since the accident, which happened on his honeymoon.
His wife, Ellie Milward, 29, was injured when the helicopter crashed in the remote Quartermaster Canyon. She remains in a critical condition.
Three other British holidaymakers and friends of the couple – Stuart Hill, 30, and his girlfriend Becky Dobson, 27, and brother Jason, 32, from Worthing, West Sussex – were killed in the crash.
Another Briton, Jennifer Barham, 39, and the pilot Scott Booth, 42, were also injured.
Friends shared the news of the latest death on a crowdfunding page set up to help the couple.
A message yesterday read: “It is with a very heavy heart that I must type this. Our good friend Jon Udall has succumb to his injuries. He was strong, brave and I will never forget him. Ellie is critical and is continuing to fight."
The helicopter had spun and crashed out of control as it came into land and had then caught fire.
Rescue efforts had been hampered by severe weather with winds of up to 50mph (80 km/h).
The incident is being investigated by the National Transportation Safety Board.
The helicopter company was Papillon Airways and flies more than 600,000 people a year on the popular sight-seeing tours.
