Special Conditions: Boeing Model 777 Series Airplanes; Overhead Crew Rest Compartment Occupiable During Taxi, Take-off, and Landing

These special conditions are issued for Boeing Model 777 series airplanes. These airplanes will have novel or unusual design features because of the installation of an overhead crew rest compartment that will be occupiable during taxi, takeoff, and landing. 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.