Partnair Flight 394 crashed in Skagerrak near Hirtshals on 8 September 1989 , killing all 55 people on board . A central cause of the accident turned out to be the use of unapproved aircraft parts , specifically unapproved bolts fastening the vertical stabilizer to the fuselage . The findings would spur international attention to the issue of unapproved parts
Partnair Flight 394
Partnair Flight 394
Partnair