FALLS CITY, Neb. (AP) — Dozens of friends and family members of the 42 people killed in a plane crash 50 years ago in southeast Nebraska gathered over the weekend for a memorial service.

The service was held Saturday morning at the site near Falls City where Braniff Airways Flight 250 crashed the night of Aug. 6, 1966, amid stormy weather.

All passengers and crew members aboard the plane died, and the crash remains Nebraska’s worst commercial airline disaster.

The National Transportation Safety Board blamed the weather for the crash but found the crew could have avoided a storm if it had been alerted about its intensity. The investigation found that the wind ripped the plane apart, causing its fin and one of the tail wings to break loose.