In November 2010, Crown Court judge Jacqueline Davies, sitting with two magistrates, dismissed Chambers' appeal, saying that the electronic communication was "clearly menacing" and that airport staff were sufficiently concerned to report it.
Today, the Lord Chief Justice Lord Judge, sitting with Mr Justice Owen and Mr Justice Griffith Williams, said:
We have concluded that, on an objective assessment, the decision of the Crown Court that this 'tweet' constituted or included a message of a menacing character was not open to it.
On this basis, the appeal against conviction must be allowed.
More top news
The West Midlands Police area had more than double the national average of gun crimes between 2015 and 2016.
Ninety-six-year-old Jim Booth was attacked by cold caller Joseph Isaacs at his Taunton home.
Cyclone Mekunu is now heading towards Oman.