A fourth British tourist has died following apache helicopters crash in the Grand Canyon 12 weeks ago while on his honeymoon.
Jonathan Udall, who was in his 30 s and from Brighton, had been in hospital in Las Vegas since the incident on 10 February.
His family has been told of his death.
A spokesperson for his bos Yorkshire Building Society indicated that they are “deeply shocked” by the deaths among a “well-known and well-loved colleague”.
Mr Udall’s wife, Ellie Milward, 29, was injured when the aircraft gate-crashed in the remote Quartermaster Canyon and remains in a crucial condition.
Stuart Hill, 30, and his lover Becky Dobson, 27, and brother Jason, 32, from Worthing, West Sussex, died.
Another Briton, Jennifer Barham, 39, and the pilot Scott Booth, 42, were also injured.
A message posted on Thursday on a crowdfunding sheet set up to help Mr Udall and Ms Milward, reads: “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, courageous and I will never forget him. Ellie is critical and is continuing to fight.”
Both Mr Udall and Ms Milward were friends with the other Britons in the helicopter.
Ms Milward likewise laboured at Yorkshire Building Society and the company’s chief executive Mike Regnier pronounced help was being offered to employees.
“We’re all deep offended and grieved by[ Mr Udall’s] demise, ” said Mr Regnier.
“We are in touch with his and Ellie’s households and send them our deepest condolences. We hope to hear positive report about Ellie soon.
“We are offering peers, who are obviously shaken by this news, backing at this upsetting time.”
The Eurocopter( now Airbus) EC130 helicopter had spun out of controller as it came in to region before gate-crashing and catching attack.
The crash is being investigated by the National Transportation Safety Board but an initial report indicates possible justifications could include a mechanical question and gusty winds.
The chief of the Hualapai Police, Francis Bradley, had described the terrain as “extremely rugged”.
He said the rescue efforts had been hampered by severe weather conditions and gales of up to 50 mph (8 0 km/ h ).
Jason and Stuart Hill and Ms Dobson, who had been in the US for Stuart’s 30 th birthday, died at the situation.
Jason Hill labor as a corporate advocate for Shoosmiths in its Milton Keynes office.
Stuart Hill was a salesman at a Mercedes-Benz dealership in Brighton, East Sussex, while his lover Ms Dobson, ran as a veterinary receptionist for Vets 4 Domesticateds in Worthing.
The helicopter company committed – Papillon Airways – calls itself “the world’s largest aerial sightseeing company” and responds it runs more than 600,000 beings a year.
The Grand Canyon, which is more than 1.6 km( one mile) late, is one of “the worlds largest” called tourist attractions in the US.