Three G4S guards were found not guilty of the manslaughter of Jimmy Mubenga.
The jury returned its verdict on Tuesday of this week after a six-week trial.
Jimmy died during a forced deportation on the tarmac at Heathrow airport in October 2010.
The guards—Stuart Tribelnig, Colin Kaler and Terrence Hughes—had handcuffed Jimmy and restrained him in the seat of the BA airliner for almost 40 minutes.
A mock-up of the airline seats was brought into the court to show jurors.
The prosecutor had said they should have given him room to breathe.
But the guards argued that they had to make sure he did not injure himself or others.
They testified that though 20 witnesses said they heard Jimmy calling that he couldn’t breathe, none of the guards heard this.
They gave evidence that he had forced his own head into a position down by his knees as he sat in a way that could restrict his breathing.