Police arrested a man on Saturday at a residential address in east London and taken to a west London police station.
He was arrested on suspicion of using a noxious substance to cause serious damage under section 113 of the Anti-Terrorism, Crime and Security Act 2001.
Following his arrest he was interviewed under Offences against the Person Act 1861 and was bailed for offences related to this act to a date in late November.
The incident is not being treated as a terrorist-related matter and the investigation is being led by officers from the Aviation Policing CID.
Enter a name and e-mail address and we will e-mail this website link too them.