Flight instructor Leandro Andrés Bertazzo, 42, died after jumping out of a moving Cessna 150 aircraft during a training flight in Toledo, central Argentina, on Saturday, according to the country’s public prosecutor. The incident left his 22-year-old student, identified as Rosario, to land the plane alone. CNN affiliate TN reported that before jumping, Bertazzo told Rosario, “You know what you have to do, carry on,” then removed his headset and seatbelt, opened the door, and exited the aircraft. Rosario managed to land safely despite being in complete shock.

Eduardo Álvarez, director of the Flying Parrot Córdoba flight school where Bertazzo worked, said there had been no signs that the instructor intended to jump. He described Bertazzo as a “beautiful person with a great smile” and expressed disbelief over the event. Álvarez noted that opening a plane door midair is extremely difficult, comparing it to opening a car door at 200 kilometers per hour. Bertazzo had flown earlier that day with another student and was known as an experienced instructor who had also worked in Chile.

Prosecutors have launched an investigation to determine the exact circumstances surrounding Bertazzo’s death.