The FAA has issued an airworthiness directive for certain Bombardier Challenger 300s as a result of reports of deformation found at the neck of the pressure regulator body on the oxygen cylinder and regulator assembly (CRA). It requires an inspection to determine if a specified oxygen CRA is installed and to replace affected oxygen CRAs.
Pressure regulator
The FAA has issued an airworthiness directive (AD) for the Bombardier Challenger 300 prompted by reports of deformation found at the neck of the pressure regulator body on the oxygen cylinder and regulator assembly (CRA). The AD requires an inspection to determine if a certain oxygen CRA is installed and the replacement of affected oxygen CRAs.