Originally Posted by
DaveReidUK
For several years, Heathrow has published a quarterly league table as part of its FlyQuiet programme showing which airlines perform best on several noise metrics, although it has never disclosed exactly how the rankings are worked out. BA Short Haul always manages to come top of the table.
This year Heathrow has commendably not only added two more emissions-related metrics (hence now "Fly Quiet & Clean"), but has also revealed for the first time the process used to derive the overall league table positions, based on the rankings for each individual metric. Unfortunately it doesn't seem to have grasped how its own methodology works, and as a result has made a complete dog's breakfast of calculating the league table positions and points.
BA Short Haul (as usual) is shown as top, but should be down in fifth place based on its individual metric rankings (it's near the bottom on one of the emissions metrics).
Some airlines (for example PK, TK, LY) get more than twice as many points as their performance actually merits and CX gets a 14-place hike up the table from where it should be.
Carriers that should be tied on points based on their metric rankings (e.g. American and Aegean) finish up to 9 places apart in the league table.
Expect the dodgy results to be pulled and correct ones substituted pretty soon, but in the meantime they can be viewed here:
The League Table Q1 2017
Well two months on and it would seem my optimism was misplaced - Heathrow continues to publish those dodgy Q1 stats and has clearly decided to brazen it out, maintaining disingenuously that it's not aware of any issues with the data, even though any bright GCSE Maths student could spot the flaky arithmetic a mile off.
However the message has clearly struck home - Heathrow published the stats for Q2 in mid-August, but this time around they are password-protected, thereby hiding them from public scrutiny, which completely negates the stated aim of
Fly Quiet & Clean that "The 50 busiest airlines at Heathrow will now be publicly ranked on their work to reduce emissions and noise in their operations".
The League Table Q2 2017