Relying on remote data, including photographs taken after the flight, the investigators believe that “navigation errors created high horizontal velocities at touchdown,” which most likely resulted in Ingenuity experiencing a “hard impact on the sand ripple’s slope,” causing it to pitch and roll.

"When running an accident investigation from 100 million miles away, you don't have any black boxes!" NASA's Håvard Grip said.

Imagine how much more difficult it would be to diagnose a helicopter accident that took place 69 million miles away with none of the usual data present to help. NASA had to do just that after its Ingenuity Mars Helicopter suffered an accident on Jan.

Ingenuity was designed to perform up to five experimental test flights over 30 days but managed to operate for almost three years, performing 72 flights.

NASA has completed the final assessment of its Ingenuity Mars helicopter and finally revealed what led to its crash. The rotorcraft flew for the last time on January 18 this year and met its end after it made a hard landing, breaking its blades.

NASA's Ingenuity helicopter, the first to fly on another planet, crashed on Mars after 72 successful flights. A software glitch during its final fligh