What Does FL1 Stand For?

FL1 stands for First Flight Model

FL1, or First Flight Model, refers to the initial prototype or conceptual design of an aircraft that has been developed for its inaugural test flight. This model is crucial in the aerospace industry as it represents the culmination of engineering and design efforts, aimed at validating the aircraft's performance, safety, and operational capabilities before moving to subsequent production phases. The FL1 serves as a key benchmark for further refinements and innovations in the aircraft design process.

Added on 14th April 2008 | Last edited on 17th June 2025 | Edit Acronym