A 16-year old British boy is nearing the final leg of his five month adventure to become youngest person to fly around the world solo.

Mack Rutherford set off on the daredevil mission from an air base in Sofia, Bulgaria in March, and if successful he will become the youngest person to circumnavigate the world solo in an aircraft.

He would clinch a Guinness World record currently held by fellow Brit Travis Ludlow, who was 18 when he completed the mission last year.

His sister Zara Rutherford, 19, became the youngest woman to fly around the world solo when GNN reported that she finished a similar mission earlier this year and still holds the title.