article_snippet.sent: Richard Toomer, from the British Airline Pilots Association (BALPA), told MailOnline Travel: 'What we’re seeing here is ‘Closely Spaced Parallel Runway operations’ in practice – a safe and normal procedure at airports around the world. '
article_snippet.sent: San Francisco Airport has two pairs of parallel runways, separated by just 750 feet.
article_snippet.sent: Other airports such as Atlanta and Sydney have similar runway configurations and operations.
highlights_snippet.sent: Aviation expert calls the manoeuvre 'Closely Spaced Parallel Runway operations' 