George Duke-Cohan, 19, caused chaos with his mass hoax campaign in March this year which saw him jailed for three years.
The teen was convicted for reporting a plane from the UK to San Francisco had been hijacked, triggering a major security scare when it landed.
He also sent thousands of emails to schools, colleges and nurseries across the UK and America warning that bombs had been planted in classrooms.
In a recording of one of the phone calls which was made while a plane was in the air, he takes on the persona of a worried father.
During the call he claims his daughter contacted him from the flight to say it had been hijacked by gunmen, one of whom had a bomb.
On arrival in San Francisco the plane was the subject of a significant security operation in a quarantined area of the airport.