An overview of advanced composite repair regimes for airliners and the current impact on the insurance claims sector. The increasing use of lightweight composite materials in aircraft manufacturing is passing on significant fuel cost savings to the airline operator. However, claims costs for structural composite damages are much greater than their alloy constructed counterparts. For example, a recent incident involving a baggage cart collision with a Boeing B777 with an alloy nacelle had claims costs of USD $2.5 million. An almost identical incident on a Boeing B787 Dreamliner composite engine nacelle, attracted claims costs in the region of USD $10 million; a four-fold increase! This risk brief aims to inform why these costs are much higher by providing a high level insight into the repair regimes for advanced composite components.