Modifying the interior and exterior configurations of large passenger aircraft involves significant alterations to meet specific operational or aesthetic requirements. This process can range from simple seat upholstery changes and entertainment system upgrades to complete cabin redesigns and the incorporation of new lavatories or galleys. For example, an airline might choose to add lie-flat seats in business class or install a premium economy section to cater to a wider range of passengers.
Altering these aircraft offers substantial advantages, including enhanced passenger comfort, brand differentiation, and improved operational efficiency. Historically, these modifications were driven primarily by airlines seeking to stand out in a competitive market. Today, the emphasis is increasingly on optimizing space and creating bespoke travel experiences, catering to evolving customer expectations and specific route requirements.