The scope of this thesis is to improve the production of tire Single Aisle (SA) aircraft family carbon fibre outboard flaps produced at Airbus Stade. Currently, the SA outboard flaps are in insufficient quality and many need to be repaired after manufacturing due to manufacturing defects In order to save time and money, a new tooling concept needs to be developed which can produce panels of good quality. The causes of manufacturing defects were previously unknown So as a first step, the causes have to be identified for the defects of the SA outboard flaps. Finding the causes and setting the requirements for the tooling topics of this thesis...