Delta Air Lines Flight 9570

Delta Air Lines Flight 9570

File:Delta DC-9-10 at Columbia in 1973.jpg A Delta Air Lines Douglas DC-9-10, similar to the one involved.
Accident summary
Date	30 May 1972
Summary	wake turbulence
Site	Greater Southwest International Airport, Fort Worth, Texas
Passengers	0
Crew	4
Injuries (non-fatal)	0
Fatalities	4 (all)
Survivors	0
Aircraft type	McDonnell Douglas DC-9-14
Operator	Delta Air Lines
Registration	N3305L

Delta Air Lines Flight 9570 crashed on 30 May 1972 at the Greater Southwest International Airport in Fort Worth, Texas, while conducting a training flight. The aircraft, a McDonnell Douglas DC-9-14, began to oscillate about the roll axis after crossing the runway threshold during a landing approach, then rolled rapidly to the right and struck the runway with the right wing low. This flight's crash has been attributed to wake turbulence behind a McDonnell Douglas DC-10 that made a touch-and-go landing ahead of it. The plane's occupants consisted of three pilots and an FAA inspector, all of whom were killed in the crash and subsequent fire. The resulting investigation prompted changes to the minimum distance that aircraft must keep when following "heavy" aircraft.

See also

• Lists of accidents and incidents on commercial airliners
• Air safety