Transport i infrastruktura · 21/09/1994

Airworthiness Directives; Puritan Bennett Sweep-On Model 2000 Crew Masks

This amendment adopts a new airworthiness directive (AD) that is applicable to certain Puritan Bennett Sweep-On Model 2000 crew masks installed on various transport and commuter category airplanes. This action requires modification of certain crew oxygen masks. This amendment is prompted by reports of difficulty in exhaling into certain crew oxygen masks due to misalignment of the demand diaphragm. The actions specified in this AD are intended to prevent the flight crew from experiencing difficulty in exhaling into the affected crew oxygen masks in the event oxygen masks are required for the crew, such as during depressurization of the airplane.