Heathrow has changed the name of its flagship environmental monitoring programme - previously called "Fly Quiet & Clean", it's now "Fly Quiet & Green".
Sadly, the change doesn't coincide with any attempt to clean up the stats, so again they give the usual distorted view of airlines' performance.
Bizarrely, Air India gets the Number One slot (which, using Heathrow's own rules, should actually belong to Qantas), mainly because AI's poor performance for track-keeping and NOx emissions hasn't been factored into the scoring.
Airlines entitled to feel aggrieved with the latest published results include China Southern, unfairly relegated 14 places from the Number 8 slot that its performance actually merits, and Virgin Atlantic, down 12 positions from its rightful 19th place. One wonders what those carriers have done (or failed to do) that has earned Heathrow's disapproval.
Air Malta, on the other hand, seem to be particularly favoured this time around - despite its performance only meriting a position in the bottom half of the league table, at 27th, it gets a 10-place hike up the rankings to 17th.
And strangest of all, Air France and Air Canada, who should be in tied place based on how they performed in each of the measured criteria, end up 9 places apart in the league table. Pour encourager les autres, presumably.
https://www.heathrowflyquietandgreen.com/