Oxygen Mask Requirement: Supplemental Oxygen for Emergency Descent and for First Aid; Turbine Engine Powered Airplanes With Pressurized Cabins
This action amends the oxygen mask requirement for circumstances in which a single pilot is at the aircraft controls. This action applies to all certificate holders who conduct domestic, flag, and supplemental operations. This action responds to a statutory mandate that requires the FAA to increase the flight level threshold at which the FAA requires use of an oxygen mask by the remaining pilot at the aircraft controls when the other pilot at the controls leaves the control station.