TDG
TDG can refer to several things, the most common being the company TransDigm Group. TransDigm Group is a global designer, manufacturer, and supplier of highly engineered aerospace components. They primarily serve the defense and commercial aviation markets. The company focuses on proprietary products that have significant aftermarket content, meaning that once a part is sold, there is a long-term opportunity for repair, overhaul, and replacement. This business model allows for strong aftermarket revenue streams. TransDigm is known for its strategy of acquiring and integrating smaller, specialized aerospace suppliers, often those with unique technological capabilities. Their product portfolio includes a wide range of items such as actuation systems, power generation and distribution equipment, flight control technologies, and various engine components. The company operates through multiple business units, each specializing in different product categories.
Another potential meaning for TDG is the Targaryen Dynasty in George R.R. Martin's A Song of Ice