Investigators say they "very carefully" considered new material about the crash, which killed 11.Read more
Shoreham Airshow plane crash
Reporter, BBC South East Today
The families of the victims gasped and were in tears as the first verdict was read out.
The judge thanked them for the dignified way they have behaved.
I can see that you are upset and you are absolutely entitled to be but despite being upset you have behaved in a way which does you great credit."
He also told the jury they had "discharged a heavy burden" in a case which was "not easy to try" because of the technical difficulty and amount of sadness and tragedy.
Pilot Andy Hill has been cleared of the manslaughter of 11 men, who died when his jet crashed at the Shoreham Airshow.
Pilot Andy Hill has been cleared of manslaughter after his plane crashed into the A27 in Shoreham during the 2015 air show.
Eleven men died in the Shoreham air crash in August 2015.