A California dad has died of his injuries just days after his wife and two youngest sons perished in a horrific plane crash, The Post has learned.

Craig Eady, 44, of Auberry, passed away in the hospital Monday, according to the Fresno County Sheriff’s Office.

It comes after his flight instructor wife Danna, 41, and sons Pavel, 10, and Remus, 13, died over the weekend when the aircraft went down near Fresno.

It has left their two eldest children, Lucien, 17, and Felicity, 18, orphaned.

The crash happened close to Sierra Sky Park airport near the San Joaquin River just before 2 p.m. Saturday, sending emergency crews scrambling to the scene, according to the Fresno County Sheriff’s Office.

Firefighters, cops and sheriff’s deputies arrived to find plane wreckage on a bluff near the river as flames tore across a nearby hillside. The aircraft was a fixed-wing, single-engine plane.

Nick Wilcox, who owns the Soar Paso flight school in Paso Robles, said he was a dear friend to Danna. He said the family was on their way to an airshow over the weekend when the plane crashed.

He added that Danna was a fellow flight instructor who had flown with him numerous times and had even taken his daughter flying.

He told The Post: “She was a very special soul.”

At the time of the crash, Eady and her husband were rushed to a hospital in critical condition. The two sons, however, were declared deceased at the scene. What led the plane to go down remains unclear as investigators begin piecing together the crash. The Federal Aviation Administration and National Transportation Safety Board are both involved, Botti said, with the NTSB taking the lead in determining what went wrong. A secured perimeter was thrown around the wreckage Saturday to keep people out and give crews room to work.

“Firefighters were able to extinguish the flames and prevent them from spreading onto the properties of nearby homes,” the Fresno Count Sheriff’s Office said in a statement.

Sources: NY Post