Special Conditions: The Boeing Company Model 787-9 Series Airplane; Dynamic Test Requirements for Single-Occupant Oblique (Side-Facing) Seats With Inflatable and 3-Point Restraint Systems

These special conditions are issued for The Boeing Company (Boeing) Model 787-9 series airplane. This airplane, as modified by Boeing, will have novel or unusual design features when compared to the state of technology envisioned in the airworthiness standards for transport-category airplanes. These design features are single-occupant oblique (side-facing) seats with inflatable and 3-point restraint systems requiring dynamic testing. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for these design features. These special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards.