135 fatalities

Delta Air Lines Flight 191 Accident (N726DA)

Dallas-Fort Worth, United States of AmericaLanding (descent or approach)

On August 2, 1985, a Lockheed L-1011 TriStar (registration N726DA) operated by Delta Airlines was involved in an aviation accident near Dallas-Fort Worth, United States of America during landing or approach. 135 people were killed. Investigators recorded the probable cause as: The flight crew's decision to initiate and continue the approach into a cumulonimbus cloud which they observed to contain visible lightning; the lack of specific guidelines, procedures and training for avoiding and escaping from low-level windshear; and the… This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 8 related events involving the same aircraft type or operator are linked below.

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary reportUpdated 2026-06-11Data APIEditorial standards
Aircraft registered N726DA
Aircraft registered N726DA. Photo: Andrew Thomas from Shrewsbury, UK / CC BY-SA 2.0, via Wikimedia Commons

Delta Air Lines Flight 191, a Lockheed L-1011 TriStar, crashed into a highway near Dallas/Fort Worth International Airport on approach to runway 17L, killing 135 people.

Flight Details and Initial Route Change Delta Air Lines Flight 191 was a scheduled passenger flight operating between Fort Lauderdale, Florida, and Los Angeles, California, with an en route stop at Dallas/Fort Worth International Airport. The aircraft, a Lockheed L-1011 TriStar, departed Fort Lauderdale at 15:10 EDT under an IFR flight plan with 152 passengers and 11 crew members on board. The dispatch package included a weather forecast for the Dallas/Fort Worth terminal area indicating a possibility of widely scattered rain showers and thunderstorms, which were expected to become isolated after 20:00 CDT. The flight proceeded uneventfully until passing New Orleans, Louisiana, when a line of weather along the Texas-Louisiana gulf coast intensified. To avoid the developing weather to the south, the flightcrew elected to change their route to the more northerly Blue Ridge arrival route. This change necessitated a 10 to 15-minute hold at the Texarkana, Arkansas, VORTAC for arrival sequencing at the Dallas/Fort Worth Airport.

Probable cause

The flight crew's decision to initiate and continue the approach into a cumulonimbus cloud which they observed to contain visible lightning; the lack of specific guidelines, procedures and training for avoiding and escaping from low-level windshear; and the lack of definitive, real-time windshear hazard information. This resulted in the aircraft's encounter at low altitude with a microburst-induced, severe windshear from a rapidly developing thunderstorm located on the final approach course.