Charging airline passengers by their weight is the concept of the future, Samoa Air's chief executive, Chris Langton, said this week. In reality, however, the idea already exists. Charging according to weight and space is a universally accepted principle both in transport and other services. On that basis, only in the airline industry did Samoa Air's supposedly revolutionary decision to charge its passengers in the same manner break new ground.
What it did breach was the worldwide trend towards accommodating the increasing number of obese people, rather than penalising them for any problems their weight created. Boston's emergency services, for example, have unveiled a special ambulance for the obese. In Australia, the Royal Adelaide Hospital has installed bigger rooms with lifting apparatus and reinforced wheelchairs and beds to cope with the influx of overweight patients. Supporters of such responses praise their sensitivity. Samoa Air is flying in the face of this.
Indisputably, however, it has both logic and fairness on its side. Airlines do not run on seats; they run on weight. For airlines, every extra passenger kilogram means more jet fuel must be burned. That is of increasing importance not only for an airline's finances in a highly competitive industry but for the environment because of the carbon dioxide emissions. Therefore, fuel consumption has become a dominant factor. The quest for every aircraft designer is to come up with new shapes and structures that cut its use.
More immediately, airline executives must find ways to offset the cost of that fuel.