See the article related to this amazing graph describing why maintenance needs to be planned and cross checked carefully!!!:
http://alltrikes.com/elgg/pages/view/40208/aircraft-maintenance-a-necessary-evil-waddington-efffect-opinion-mike-busch-a-well-known-apia-and-owner-of-savvy-aviator
An article written by Giles Bru that defines the reasons and philosophy behind Air Creation wing designs. Very sound knowledge, experience and wisdom that may...