Continental Airlines Flight 1713: The Stapleton Airport Crash (1987)
On November 15, 1987, Continental Airlines Flight 1713, a Douglas DC-9 bound for Boise, Idaho, crashed moments after lifting off from Stapleton International Airport in Denver, Colorado, during a heavy snowstorm. The aircraft rolled onto its back and broke apart, killing 25 of the 82 passengers and all three crew members. The disaster prompted a national reckoning over airline deicing procedures and cold-weather takeoff delays.
A Snowy Afternoon at Stapleton
By mid-afternoon on November 15, 1987, a winter storm had blanketed Denver's Stapleton International Airport, dumping several inches of snow and reducing visibility across the airfield. Flight 1713, operated by Continental Airlines, was scheduled to depart for Boise, Idaho, but like dozens of other flights that day, it sat delayed on the ground as ground crews scrambled to deice aircraft and clear runways. The DC-9, carrying 82 passengers and five crew members, had been deiced once but waited nearly 30 minutes afterward before receiving clearance to push back and taxi—time during which fresh snow and ice could have re-accumulated on its wings and control surfaces. Air traffic congestion caused by the storm meant crews across the airport faced similar delays, raising later questions about whether deicing fluid had lost its effectiveness by the time planes actually took off. The flight crew, captain Frank B. Zvonek Jr. and first officer Lee Bruecher, prepared for departure under difficult and rapidly changing conditions, a scenario investigators would later scrutinize closely as they pieced together the sequence of events leading to catastrophe.
Did You Know?
Investigators determined that the DC-9 had been deiced nearly 30 minutes before its actual takeoff roll, a delay during Denver's snowstorm that allowed ice to re-form on the wings—a finding that directly led to the FAA's modern 'holdover time' deicing regulations still used by airlines today.
The Crash
At approximately 2:15 p.m., Flight 1713 began its takeoff roll down Stapleton's runway. Witnesses and surviving passengers described the DC-9 lifting off normally before suddenly rolling sharply to one side. The aircraft's left wing dipped, struck the ground, and the plane flipped onto its back, breaking into pieces as it slid and tumbled across the snow-covered ground near the runway. The impact and post-crash conditions killed 25 passengers and all three crew members, including both pilots. Remarkably, 54 people aboard survived, some suffering serious injuries, while emergency responders faced treacherous, snow-slicked conditions reaching the wreckage. The abrupt, uncommanded roll shortly after liftoff pointed investigators toward a loss of aerodynamic control, rather than mechanical failure or engine trouble, as the central mystery to unravel in the crash's aftermath.
Investigation and Aftermath
The National Transportation Safety Board's investigation concluded that ice and snow contamination on the DC-9's wings, accumulated during the extended delay between deicing and takeoff, most likely caused the aircraft to stall asymmetrically and roll uncontrollably shortly after rotation. Investigators also cited the flight crew's decision-making regarding the deicing hold time and Continental's procedures for reassessing wing conditions before departure in worsening weather. The crash became a pivotal case study in aviation safety, contributing to significant reforms in deicing protocols nationwide, including stricter holdover time guidelines that dictate how long deicing fluid remains effective under specific weather conditions. The Federal Aviation Administration and airlines subsequently tightened rules requiring visual or tactile wing inspections immediately before takeoff in snow or freezing precipitation. Flight 1713 remains one of several tragic incidents from the late 1980s that reshaped how the industry approaches winter operations, alongside similar accidents that underscored the deadly consequences of ice accumulation on aircraft surfaces during ground delays.