Paul Chambers, 28, was fined £385 and ordered to pay £600 costs at Doncaster Magistrates' Court in May 2010 after being convicted of sending "a message of a menacing character", contrary to provisions of the 2003 Communications Act.
He said he sent the tweet to his 600 followers in a moment of frustration after Robin Hood Airport in South Yorkshire was closed by snow in January 2010, and never thought anyone would take his "silly joke" seriously.
It read: "Crap! Robin Hood Airport is closed. You've got a week and a bit to get your s*** together, otherwise I'm blowing the airport sky high!"
More top news
Rape suspects will need to prove to police that a woman consented to sex under fresh new guidance in sex offence cases.
Dippy the Diplodocus is to forced into retirement and moved out of the Natural History Museum's main hall.
Alice Biggar has managed to survive on cheap tins, heavily-reduced supermarket goods and even chicken bones from butchers.