A married couple from Louisiana has joined the lawsuit against Southwest Airlines and Boeing over the deadly engine explosion that sucked a passenger halfway out of a jumbo jet window in April 2018.

Tyler and Alex Albin — both med school graduates about to begin their careers — had been returning from a honeymoon in New York on Flight 1380 from La Guardia Airport to Dallas when an engine exploded causing shrapnel to blow out a window nearly sucking the passenger out of the plane.

The pair was sitting two rows away during the ordeal and the husband even “attempted CPR on the fatal victim prior to the plane arriving at the gate. As a consequence he was covered in her blood upon arrival,” reads the amended complaint filed in Manhattan Supreme Court Tuesday.

The pilot was able to make an emergency landing in Philadelphia but Jennifer Riordan — who was partially sucked out of the window — died.

The Albins “were confronted with the overwhelming horror of being trapped in an airplane that they felt was about to crash,” according to the court documents.

Their lawyer, Jonathan Johnson, said in a statement, “The young couple’s honeymoon was turned into a traumatic nightmare that has left indelible scars.”

The couple suffers post-traumatic stress disorder and a fear of flying, Johnson said.

The updated lawsuit notes Boeing 737’s deadly track record over the past two years with the crashes causing 459 deaths in total.

“The Boeing 737 aircraft record of tragic crashes manifests Boeing’s systemic failure to provide adequate safety for people who fly aboard the Boeing 737 aircraft,” the court papers allege.

“The tragedy of flight 1380 is just one terrible chapter in the story of Boeing placing profits above safety,” charge the court documents.

The original June 2018 suit had nine plaintiffs, but eight of those have dropped off since. Johnson said he could not disclose why.

Passenger Cindy Arena’s husband, Joe Arena — who claims the crash has had a “devastating impact upon their marital relationship” — is the only other remaining plaintiff alongside the Albins.

The lawsuit claims damages of at least $1 billion against Boeing for a “pattern of misconduct with respect to the design and safety inspections related to the 737,” Johnson told The Post.

A spokesperson for Boeing said the company “does not comment on pending litigation.” Southwest did not immediately return a request for comment.