4468 Because operating out of Heathrow on a daily basis means the operation would grind to a halt if it wasn't for the goodwill of the pilots. It would now seem that we have shot ourselves in the foot though, as it would now appear that this "going the extra mile" and working beyond our contractual agreements now form part of "custom and practice" and that if the pilots now try and work to their contractual limits, we will be in breach of contract.