Summary
This document proposes to adopt a new airworthiness directive (AD) that would apply to certain Pilatus Aircraft Ltd. Models PC-12 and PC-12/45 airplanes. This proposed AD would require you to replace the metered connector and oxygen tubing and related components in the rear seat bench. This proposed AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for Switzerland. The actions specified by this proposed AD are intended to correct for insufficient oxygen quantity available to occupants of the rear seat bench in some emergency conditions, which could result in reduced occupant safety at the rear bench seat location.