The wreckage of the Pan Am plane that killed 52 people is found on the ocean floor 74 years after it crashed.

A team of specialized search experts has located the wreckage of a Pan American Airways plane that crashed 74 years ago, killing 52 people, after a long underwater search off the coast of Puerto Rico. The discovery was made by the Air/Sea Heritage Foundation, working with partners including the “Expedition Unknown” program on the Discovery channel, who identified the remains of the Clipper Endeavor, a Douglas DC-4, resting on the ocean floor near the northern coast of Puerto Rico. The aircraft, which had departed Puerto Rico on April 11, 1952, broke into two sections upon impact with the water and settled onto the seabed. It carried 64 passengers and five crew members. While all aboard survived the initial crash, only 12 passengers and the entire crew were rescued. Despite the presence of life rafts and personal flotation devices, many passengers remained seated, leading to the deaths of 52 individuals who perished along with the plane. Although the general location of the crash was known, the precise site of the wreckage remained unknown until recently. The plane was identified through images showing its iconic winged logo and still-legible name. The discovery came after extensive efforts using high-resolution sonar technology and autonomous underwater drones, allowing researchers to locate the remains at a depth of nearly 600 meters (about 2,000 feet). Russ Matthews, president of the Air/Sea Heritage Foundation, expressed both surprise and humility at the finding. He noted that he first learned of the Clipper Endeavor while investigating another unrelated Pan Am incident and was shocked that such a significant historical event had largely faded from public memory. His organization has led numerous expeditions to uncover and document major aviation and maritime wrecks around the world. Known locally in Puerto Rico as “La Tragedia del Viernes Santo,” the crash became a pivotal moment in aviation history. It prompted critical safety reforms, including pre-flight safety instructions and emergency procedure demonstrations. The tragedy underscored the need for improved safety measures and contributed to shaping modern air travel protocols. The search operation, involving the company Deep Sea Vision, utilized advanced sonar systems and autonomous submersible drones to pinpoint the wreck’s exact location. This effort ended a decades-long mystery surrounding the final resting place of the Clipper Endeavor. The find marks a significant milestone in the field of maritime archaeology and aviation history, offering new insights into one of the deadliest mid-century air disasters.