Ball lock pin with fail-safe locking mechanism

A ball lock pin comprising:

• a pin body with a length axis, an inner accommodation, and at least one locking ball accommodation;
• a blocking pin that is at least partly arranged in the inner accommodation and movable along the length axis between a blocking position and a releasing position;
• at least one locking ball that is movably arranged in the at least one locking ball accommodation, wherein the at least one locking ball is biased into a locking position by the blocking pin if the blocking pin is in the blocking position, and wherein the at least one locking ball is released for moving into an unlocking position if the blocking pin is in the releasing position;
• a primary spring element that is arranged in the inner accommodation and biases the blocking pin into the blocking position;
• and
• a redundant spring element that is arranged in the inner accommodation and biases the blocking pin into the blocking position.