The filmmakers permitted The Associated Press to view the film ahead of the screenings.
The movie focuses on Crocker — known as Cecelia Cichan at the time of the crash — as well as three other "sole survivors" of plane crashes: George Lamson Jr., a then 17-year-old from Plymouth, Minn., who was aboard a Galaxy Airlines flight that crashed in Reno, Nev., in 1985; Bahia Bakari, a 12-year-old girl who lived through a Yemenia Airways flight that crashed near the Comoros Islands in 2009; and Jim Polehinke, the co-pilot of a 2006 Comair flight that crashed in Lexington, Ky.
It's been more than a quarter-century since Northwest Airlines Flight 255 crashed in the Detroit suburb of Romulus. The plane was just clearing the runway at 8:46 p.m. on Aug. 16, 1987, when it tilted slightly. The left wing clipped a light pole, and the damaged airliner sheared the top off a rental car building.
The MD-80 left a half-mile trail of bodies, charred wreckage, magazines and trays of food along Middlebelt Road when it crashed.
The National Transportation Safety Board concluded the plane's crew failed to set the wing flaps properly for takeoff. The agency also said a cockpit warning system did not alert the crew to the problem.
Crocker's parents and brother were among those killed. They lived in Tempe, Ariz., at the time.
She was raised in Alabama by her aunt and uncle who shielded her from the media and others who sought to delve into her unique past.
Crocker said the enormity of what had happened didn't really hit her for a while.
"When I realized I was the only person to survive that plane crash, I was maybe in middle school, high school, maybe, being an adolescent and confused," said Crocker, who was interviewed by the film's director, Ky Dickens, over 1.5 hours in Queens, N.Y., in September 2011. "So it was just extra stress for me. I remember feeling angry and survivor's guilt. 'Why didn't my brother survive? Why didn't anybody? Why me?'"
As for returning to the air, Crocker "feels fine flying and does so quite often," Dickens said.
"Flying doesn't scare me. I have this mentality where if something bad happened to me once on a plane, it's not going to happen again," Crocker says in the film. "The odds are just astronomical."