American Airlines is one of the largest airlines in the world, headquartered in Fort Worth, Texas, United States. The company operates in the Full Service Airline sector, providing air transportation services for passengers and cargo. American Airlines has a vast network of flights, covering over 350 destinations in more than 50 countries. The company has a fleet of over 1,500 aircraft, including narrow-body, wide-body, and regional jets.

As a large corporation, American Airlines is committed to reducing its carbon footprint and adopting sustainable practices. The company has set ambitious goals to reduce its greenhouse gas emissions and increase the use of renewable energy sources. American Airlines has pledged to achieve net-zero carbon emissions by 2050, in line with the Paris Agreement's goals.

One of the ways American Airlines is working towards decarbonisation is by investing in renewable energy. The company has signed several corporate power purchase agreements (PPAs) with renewable energy developers to source renewable energy for its operations. For example, in 2019, American Airlines signed a PPA with a wind farm in Texas, which will provide 130 MW of renewable energy to power the company's operations. This PPA is expected to reduce American Airlines' carbon emissions by 5.5 million metric tons over the next 15 years.

American Airlines is also investing in energy-efficient technologies and practices to reduce its energy consumption. The company has implemented several energy-saving measures, such as installing LED lighting, upgrading HVAC systems, and optimizing flight routes to reduce fuel consumption. These efforts have resulted in significant energy savings and reduced carbon emissions.

Another area where American Airlines is focusing on is corporate energy management. The company has established an Energy Management Program to monitor and optimize its energy use across its operations. The program includes energy audits, energy-efficient equipment upgrades, and employee engagement initiatives to promote energy conservation.

American Airlines is also collaborating with industry partners and stakeholders to advance decarbonisation efforts in the aviation sector. The company is a member of the Sustainable Aviation Fuel Users Group, which aims to accelerate the development and use of sustainable aviation fuels. American Airlines is also a founding member of the JetBlue Technology Ventures, a venture capital subsidiary of JetBlue Airways, which invests in innovative technologies and startups that can help reduce the aviation industry's carbon footprint.

In conclusion, American Airlines is a leading player in the Full Service Airline sector, committed to reducing its carbon footprint and adopting sustainable practices. The company is investing in renewable energy, energy-efficient technologies, and corporate energy management to achieve its decarbonisation goals. American Airlines is also collaborating with industry partners and stakeholders to advance decarbonisation efforts in the aviation sector. As the demand for sustainable air travel grows, American Airlines is well-positioned to lead the way towards a more sustainable future for the aviation industry.