Interessant at Airbus finner dette nødvendig ... 
http://www.businessweek.com/article...stomers-your-200-million-plane-is-not-a-lemon

http://www.businessweek.com/article...stomers-your-200-million-plane-is-not-a-lemon
Two years after ending production of its A340 jet, Airbus is scrambling to persuade customers who bought the $200 million aircraft that they aren’t stuck with a gas-guzzling lemon.