The Flight Factor 757 v2 for X-Plane 12: A Technical Evaluation of Systems, Flight Dynamics, and Immersion Author: [Your Name / Institutional Affiliation – if applicable] Date: April 18, 2026 Abstract The Flight Factor 757 v2, originally developed for X-Plane 11, has been progressively updated for compatibility with Laminar Research’s X-Plane 12. This paper evaluates the add-on aircraft in terms of systems modeling, flight dynamics, visual integration with X-Plane 12’s new weather and lighting engine, and overall user experience. Through qualitative assessment based on simulator community feedback and developer documentation, the study finds that while the Flight Factor 757 retains its status as a study-level simulation, certain limitations persist in texture optimization and full utilization of XP12’s rain physics. Nonetheless, it remains one of the most comprehensive narrow-body airliner simulations available. 1. Introduction X-Plane 12 introduced significant advancements in flight simulation, including photometrically calibrated lighting, 3D volumetric clouds, dynamic weather with microbursts and icing, and improved ground physics. For third-party developers, updating legacy aircraft to leverage these features while maintaining performance and systems depth is a major challenge.