Andes Plane Crash Survivors: How They Stayed Alive and What We Learned

Overview and Core Facts

On October 13, 1972, a Fairchild FH-227 operated by Uruguayan Air Force crashed in the high Andes near the Argentina border. Of the 45 people on board—six crew and 39 passengers—29 died in the crash or shortly after. The 16 survivors remained at high altitude with minimal gear, resorting to extreme measures to stay alive, and were rescued on December 23, 1972, more than two months later. This evergreen explainer outlines what happened, why survival choices were made, and how verified records shape the story.

Immediate Aftermath: What the Survivors Found

Within minutes of the crash, it was clear the situation was dire. The aircraft had come to rest on a remote glacier at about 3,600 meters, surrounded by steep slopes and avalanche risk. Several survivors had injuries that prevented movement; resources were extremely limited—no search-and-rescue was yet aware of their position. In the first hours, people focused on triage, covering the injured, and using seat covers and luggage to retain warmth as temperatures plunged at night.

Shelter and Morale in the First Days

Two teams formed near the tail and fuselage sections. They dug into the snow to create windbreaks and used whatever insulation they could find. Because the sun set early and storms rolled in without warning, keeping core temperature up became the priority. Maintaining some semblance of routine—assigning watches, rationing food, and documenting beliefs in a “bible” made from seat covers—helped preserve morale.

Resource Limits and Desperation

There was never enough food for the group. Initial supplies from the wreckage included limited chocolate, candy, and some packaging that offered negligible nutrition. As days turned into weeks, it became clear they would have to change tactics or die. The group decided to eat the dead, beginning with those who had died in the crash and later with individuals who succumbed to exposure. This decision, while culturally and psychologically inconceivable to many, was framed at the time as a necessary compromise to keep at least some alive long enough for rescue.

Search and Rescue Timeline

Initial search efforts assumed the plane would have come down in lower, more accessible areas; crews combed valleys and lower passes days after the crash without success. As the situation turned dire, a small team of survivors organized a trek down the mountains on December 12, 1972, to find help. Two of them—Nando Parrado and Roberto Canessa—reached a Chilean farmer on December 15, triggering the organized rescue. The remaining survivors were located on December 23, 1972. The delay between the crash and discovery underscored how difficult it is to find aircraft in mountainous terrain and triggered changes in South American aviation search protocols.

Medical and Physiological Insights

Survivors lost significant weight—some estimates indicate over 40% of body mass for several individuals—and experienced severe malnutrition, frostbite, and altitude-related illnesses. Rescuers and doctors were struck by how some patients were able to adapt physiologically to prolonged starvation, but many required careful refeeding to avoid complications. The medical lessons from the Andes crash informed wilderness medicine protocols, particularly around managing hypothermia, starvation ketosis, and delayed-onset refeeding syndrome.

Ethics, Memory, and Long-Term Impact

The decision to consume the dead remains one of the most ethically charged parts of the story. Several survivors later expressed profound regret, while others framed it as a pragmatic choice in an environment stripped of normal moral scaffolding. In the years since, some survivors have chosen privacy; others have spoken publicly, written books, and participated in documentaries. The crash influenced airline policy, including better tracking over remote terrain and improved emergency training for passengers. It also continues to serve as a case study in group decision-making under extreme duress.

• Physiological: Humans can survive weeks without food, but altitude and cold dramatically shorten that window.
• Decision-making: Clear roles and a shared moral framework helped the group make hard choices, but fractures remained.
• Rescue practices: The delay highlighted the need for focused, mountain-capable search operations and better coordination across countries.
• Ethical legacy: The event remains a reference point in bioethics and survival ethics discussions.
• Media responsibility: Sensationalism can distort trauma; careful, survivor-centered reporting is essential.

Clarifying Common Misunderstandings

Some versions of the story exaggerate the speed of the rescue or minimize the role of cannibalism in keeping people alive. Verified timelines show that rescue was neither immediate nor guaranteed; it resulted from a risky trek by two survivors and subsequent coordination. Cannibalism was not a choice made lightly, nor was it universally accepted within the group—it was a last-ditch effort to avoid total loss. Understanding the context helps avoid both stigmatization and romanticization of the survivors’ actions.

Evergreen Takeaways

The Andes crash endures as a case study in human resilience, ethical ambiguity, and institutional response. Key takeaways include the importance of preparation for remote travel, better mountain-search protocols, informed medical care for starvation survivors, and responsible storytelling that centers those who lived through trauma. The facts, as reported in official inquiries and survivor accounts, remain consistent over decades, making this a durable topic for ongoing public understanding and training.