§23.2250 Design and construction principles

(a) Each part, article, and assembly must be designed for the expected operating conditions of the aeroplane. (b) Design data must adequately define the part, article, or assembly configuration, its design features, and any materials and processes used. (c) The suitability of each design detail and part having an important bearing on safety in operations must be determined. (d) The control system must be free from jamming, excessive friction, and excessive deflection when the aeroplane is subjected to expected limit air loads. (e) Doors, canopies, and exits must be protected against inadvertent opening in flight, unless shown to create no hazard, when opened in flight.