The group recorded martyrdom videos at a flat in Walthamstow, east London.
Abdulla Ahmed Ali singled out seven flights to San Francisco, Toronto, Montreal, Washington, New York and Chicago that departed within two-and-a-half hours of each other.
If successful, the explosions could have exceeded the carnage of the September 11 attacks, his trial heard.
He was sentenced to life.
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Officers were called to Stoke Newington High Street were they found the road littered with items.
Dry and cloudy tonight. Breezy at times. Lows of 9C.
The Commons Environmental Audit Committee warned ministers not to approve the scheme unless the airport gives assurances about air quality.