Special Conditions: GDC Technics, Boeing Model 777-300ER Airplane; the Use of Single-Passenger Side-Facing Seats Equipped With Multiple Airbag Systems

These special conditions are issued for the Boeing Model 777- 300ER airplane. This airplane, as modified by GDC Technics, has novel or unusual design features when compared to the state of technology envisioned in the airworthiness standards for transport category airplanes. This design feature as modified by GDC Technics, will be equipped with nine single-passenger, side-facing seats, each of which will be installed with an upper torso restraint equipped with an airbag system and a floor level airbag system to limit the axial rotation of the upper leg, due to leg flail, of occupants in single-place, side facing divans. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. 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.