A Long Island Marine was critically injured in a helicopter crash in Hawaii that killed one Marine and injured two others on the north shore of Oahu late Tuesday.

Cpl. Ronnie Brandafino, 23, of Farmingville, suffered injuries to his leg and pelvis when the CH-53 Sea Stallion crash-landed on a sand bar near Marine Corps Base Hawaii, relatives said.

His parents, Frank Brandafino and Darlene Claus, and his brother, Derek, arrived in Hawaii early Thursday to be at his bedside, said Brandafino's stepmother, Michelle Brandafino, of Nesconset.

She said she had been relieved when Brandafino returned safely from seven months in Afghanistan in October. He served a 2008 tour of duty in Iraq.

"He was supposed to be coming back home for good in April because he'd done his five years," she said.

The twin-engine, heavy-lift helicopter had left the base, just outside the beachfront village of Kailua, for a 7 p.m. training mission. It was flying at about 300 feet when it issued a mayday call, Marines spokeswoman 2nd Lt. Diann Olson said.

The 24,000-pound Sea Stallion made a crash landing before coming to rest on its side.

Olson confirmed Brandafino, a crew chief with Marine Heavy Helicopter Squadron 363, Marine Air Group 24, was among those injured. He was in stable condition Thursday at The Queen's Medical Center in Honolulu, as were the pilot, Maj. Clinton J. Collins, and co-pilot, Capt. Kevin F. Hayles, she said.

Killed in the crash was Cpl. Jonathan D. Faircloth of Mechanicsburg, Pa.

Two years ago, Brandafino surprised a second-grader at Frank J. Carasiti Elementary School in Rocky Point, Heather Kuhn, when he presented her with an American flag and combat wings at a school assembly.

Heather had sent Brandafino a care package while his unit was stationed at Al Asad, Iraq.

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