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The names of five of the 11 people killed on board a skydiving plane that crashed in Hawaii on Friday have been revealed on social media as it was learned on Sunday that the same aircraft's engine stalled in 2016, forcing the skydivers to jump early.

While officials have not named the victims in Friday's North Shore crash, friends and family have taken to social media to offer condolences and eulogies. 

An official with the mayor's office said Monday would be the earliest any information is released.

However, at least one family is sharing their grief before getting the official word, saying Casey Williamson, 29, was one of the victims.

Casey Williamson, 29, aka Case E. Dale, a camera flyer/coach at Oahu Parachute Center, was killed in the crash of a skydiving plane in Hawaii on Friday

The videographer and skydiving instructor, originally from Yukon, Oklahoma, only moved to Hawaii at the beginning of 2018 to focus on skydiving full time

He made his first jump two-and-a-half-years ago, and worked at the Oahu Parachute Center filming customers as they jumped from the plane

Williamson's love of adventure led him to winter snowboarding in Vail, Colorado, and summer skydiving in Moab, Utah. 

A year-and-a-half ago, he found his way to Hawaii, where he could skydive year-round.

Williamson was his mother Carla Ajaga's only child, his cousin Natacha Mendenhall said.

'We're all very upset,' said Mendenhall, speaking from her home in Fort Worth, Texas.

'She cannot really talk right now. What she wants everyone to know is how full of life her son was, how loving he was.'

A former roommate of Mike Martin (pictured above) says he was one of the fatalities in Friday's crash

Martin, who had been skydiving for three years, was described as someone who 'lived life on the edge'. He is shown in the above undated file photo with Heather Reilly, a friend who also died last year while hiking in the mountains

Martin is seen above on one of his skydiving jumps. His family is originally from Palm Bay, Florida. His Facebook account lists him as self-employed

'He was trying to pursue aeronautical engineering because loved it that much,' said friend Brian Jones. 'Just outgoing, caring, one of the nicest guys I've ever met.'

Williamson, who was from Yukon, Oklahoma, worked as an instructor and as a videographer who filmed customers as they dove. He was trying to earn more jumping hours and learn the trade, Mendenhall said.

Williamson's family has not been officially notified of his death. 

But they provided Honolulu police with Williamson's name and date of birth, and the police confirmed he was on the flight, Mendenhall said.

Police told the Honolulu Star-Advertiser that the victims were nine men and two women. 

Both women and three of the men were all in their late 20s. Police, who didn't return messages to The Associated Press, didn't have ages on the six others.

Mike Martin, who had been skydiving for three years and has been described as someone who 'lived life on the edge,' was identified by friends as one of the fatalities on board.

'He lived life on the edge, always said he wanted to go this way which was terrible to say,' Brian Jones, a former roommate of Martin's, told KHON-TV. 

'I was living with him that's what we would talk about.'

Jones added: 'Our friend Heather Reilly who died in the mountains last year, Mike, Heather, and I were all friends. 

Daniel Herndon was identified on social media as one of the fatalities in the Hawaii crash on Friday

Herndon was an instructor at the Oahu Parachute Center. He is seen above in an undated file photo

Though authorities have not identified him publicly as one of the fatalities, friends have posted messages on his Facebook page expressing sorrow that he is gone

'It's insane to lose two good friends in two years.'

Martin's family is originally from Palm Bay, Florida. His Facebook account lists him as self-employed. 

'He was trying to pursue aeronautical engineering because loved it that much,' said Jones. 

'Just outgoing, caring, one of the nicest guys I've ever met. 

'I'm forever grateful to have him in my life. I just can't believe he's gone.' 

Six of the fatalities worked for the Oahu Parachute Center.

Larry Lemaster, an instructor at the center, has been identified as one of the fatalities, according to HawaiiNewsNow. 

Lemaster was known as an expert skydiver who was once a member of Team Fastrax, a professional skydiving team that was known to perform shows throughout the continental United States.

'Larry was a professional skydiver and performed at the highest level in our sport,' Team Fastrax said in a statement. 

Larry Lemaster, one of the people who died in the crash on Friday, is seen above with his partner Anna Elkins

Lemaster was also a parachute instructor at the Oaho Parachute Center

Lemaster was known as an expert skydiver who was once a member of Team Fastrax, a professional skydiving team that was known to perform shows throughout the continental United States

Lemaster also served in the United States Army, according to a statement by Team Fastrax

Lemaster's partner, Anna Elkins, posted a message on her Facebook account expressing grief over his death

'He was a charitable man that put the needs of others before his own. 

'Larry served our nation with honor in the United States Army and donated his time to share the great aspects for our sport by taking our combat injured warriors skydiving. 

'Larry never met a stranger and made the lives of everyone he met better. 

'The world lost a teacher of how to live life properly and we will miss him.' 

Anna Elkins, who had a child with Lemaster, posted a message on her Facebook page which read: 'My intense pain and anguish is indescribable. Today is the worst day of my life. 

'My son has lost his father. I have lost something I could not put into words. 

'I don’t have an explanation for the utter tragedy that has happened. 

'But Larry Lemaster would never want one person to waste a single minute of their life mourning his. 

'He was doing what he loved. 

'We spoke about this on many occasions, he wants you to celebrate his life and your own. Love who you love with great intensity. 

'Do what makes you happy. Be the person you want to be because obviously tomorrow is not guaranteed. 

A fifth victim has been identified on social media as James Lisenbee (pictured in an undated file photo)

On his Facebook page, it lists his hometown as Fallon, Nevada

'Just love one another. 

'My heart also goes out to Oahu Parachute Center and all of the loved ones of our dear friends that ended their journey with Larry Lemaster. 

'Please give us time to grieve. 

'I’ve never been through something quite like this but it is absolutely unbearable! 

'We will need some time.'

In her Facebook post, Elkins also mentioned Daniel Herndon, Martin, Casey Williamson, and two other people by their first names - 'James and Jerome.'

Herndon was a parachute instructor at Oahu Parachute Center. 

Though authorities have not identified him publicly as one of the fatalities, friends have posted messages on his Facebook page expressing sorrow that he is gone. 

A crowdfunding campaign is now raising money for Herndon's funeral expenses. 

A fifth victim has been identified on social media as James Lisenbee. On his Facebook page, it lists his hometown as Fallon, Nevada.

Earlier on Sunday, it was learned that federal investigators will review repair and inspection records on the skydiving plane that became inverted before crashing shortly after takeoff on Oahu's North Shore, killing all 11 people on board in the deadliest civil aviation accident since 2011.

The same plane sustained substantial damage to its tail section in a 2016 accident while carrying skydivers over Northern California.

Repairs were then made to get the plane back into service, National Transportation Safety Board officials said at a news conference Sunday.

Federal investigators are seen above at the crash site in Oahu on Sunday

This is the site where a Beechcraft King Air twin-engine plane crashed Friday evening

Mourners created a makeshift memorial along the fence near the crash site in Oahu on Saturday

Brian Raley places large flowers and leaves as part of a memorial at the site

Amateur video was shot shortly after the plane crashed at the site in Oahu on Friday

'We will be looking at the quality of those repairs and whether it was inspected and whether it was airworthy,' the NTSB's Jennifer Homendy said.

The plane was equipped to carry 13 people, she said.

'Weight and balance has a factor in the safety of these operations and that's a calculation that needs to be made before a plane is operated,' she said.

In the 2016 incident, the twin-engine plane stalled three times and spun repeatedly before the pilot managed to land it after the skydivers jumped out, the NTSB said in its investigative report. 

The plane was too heavily weighted toward the back, which was blamed on the pilot.

The plane remains on the field at Dillingham Airfield, and it could stay there for three or four days before being removed to a secure location. 

The airport remains closed.

The NSTB will issue a preliminary report in about two weeks. 

The final report, which will include the cause of the accident, could take up to two years, but Homendy said the NTSB has at times issued urgent safety recommendations before the final report, if warranted.

Friday's crash was the most deadly civil aviation accident in the United States since a 2011 Reno Air Show wreck killed a pilot and 10 spectators in Nevada.

Homendy with the NTSB asked anyone with information about the accident, including if they have photos or video, to share that with the agency.

Steven Tickemyer said he saw the plane take flight, get 75 to 100 feet off the ground and turn away from the mountain range nearby.

Remnants of an aircraft carrying eleven people lies on the ground near a fence that surrounds Dillingham Airfield in Mokuleia, just off Farrington Highway

A plume of smoke was filmed above the crash site on Friday after a light-aircraft on a skydiving trip crashed in Hawaii 

He said the plane then started to nosedive and flip over belly forward so that it was upside down. 

The aircraft then flipped over again and hit the ground nose first. There was an explosion when it hit the ground.

This all transpired in about 20 to 30 seconds, said Tickemyer, who watched from a beach across the street where he was attending a friend's small wedding ceremony.

He and his friends hopped in his truck, called 911 and drove over to help. They screamed to see if anyone would respond, but no one did, he said.

The flight was operated by the Oahu Parachute Center skydiving company. The ratio of employees to customers aboard suggested that tandem jumps may have been planned in which the customers would have jumped while attached to experienced skydivers, Tim Sakahara, a spokesman for the Hawaii Department of Transportation, told reporters.

Witness Wylie Schoonover saw the plane flying over trees while driving from a nearby YMCA camp after picking up a friend. 

According to its website, the single-runway Dillingham Airport primarily serves commercial glider and sky diving operations. The airfield is where the crash occurred

A plume of smoke was filmed above the crash site on Friday after a light-aircraft on a skydiving trip crashed in Hawaii 

The twin engine King Air plane (similar to above) went down near an airfield on Oahu island's North Shore on Friday

Then she saw smoke billowing from the airfield and drove over.

There was an 'insane amount of fire,' she said.

'It didn't even look like a plane. A bunch of people were asking "What is this?" It was completely gone,' Schoonover said.

The plane with two turboprop engines was manufactured in 1967, Federal Aviation Administration records said.

No one answered the phone at Oahu Parachute Center on Sunday, which advertises its services on a web site saying its jumps offer people 'a magical experience.'

Tandem jumps are featured at prices ranging from $170 to $250.

Dillingham Airfield is used mostly for skydiving and glider flights. Hawaii shares the airfield with the Army, which uses it for helicopter night-vision training.