The jury in the trial of seven men charged over a fatal bikie brawl at Sydney Airport has retired to consider its verdict. Hells Angels associate Anthony Zervas died after being bashed and stabbed during a fight between rival bikie clubs at the airport domestic terminal in March 2009. Six Comancheros stood trial for his murder, while a Hells Angels member stood trial for riot and affray. After a four-month trial that heard evidence from airport staff and passengers, Justice Robert Hulme summed up the Crown and defence cases. He directed the jurors to reach a unanimous verdict. The judge told them to be fearless and impartial in reaching it and to make their own assessment of CCTV footage and witnesses. The jurors retired this afternoon and will continue their deliberations in the morning.