Document ID: chunk:federal_register_of_legislation:F2025C00050:body:0:p133
Version: federal_register_of_legislation:F2025C00050
Segment Type: other
Provision Reference: 
Character Range: 455492–459401

systems;
       11.         pitot and static system;
       12.          suction system;
       13.      oxygen system;
       14.        fire extinguisher system;
       15.        engines;
       16.        weight, balance and performance;
       17.        abnormal and emergency operations.

DFE6 Pressurisation system

 1.                     Unit description
This unit describes the skills and knowledge required to operate an aircraft that is fitted with a pressurisation system during normal, abnormal and emergency flight.

 1.                     Elements and performance criteria
     1.               DFE6.1 – Operate and monitor aircraft pressurisation system
            1.        conduct pre-flight serviceability check of flight crew supplementary oxygen system, confirming normal contents, flow and operation of oxygen system;
            2.        activate and operate pressurisation system, ensuring appropriate selection of switches and circuit breakers;
            3.         confirm pressurisation system is operating normally before reaching 10,000 ft;
            4.        confirm the integrity of the pressurisation system when passing 10,000 ft, and identify an appropriate pressure differential between cabin and outside air pressure;
            5.        confirm cabin altitude and cabin differential pressure are appropriate and constant during cruise;
            6.          monitor and react appropriately to instrument indications, physiological symptoms and crew member's advice during multi-crew operations to ensure normal operation of the pressurisation system;
            7.        ensure the aircraft is de-pressurised before opening doors on the ground.
     2.               DFE6.2 – Manage pressurisation system during abnormal and emergency situations
            1.        identify abnormal or emergency situation involving aircraft pressurisation system, including rapid and slow decompression;
            2.        perform abnormal or emergency procedures;
            3.         monitor cabin altitude and differential pressure, identify any discrepancies and manually control the aircraft pressurisation system when appropriate;
            4.        monitor physiological condition of self, crew members and passengers to identify signs of hypoxia, barotrauma or other physiological hazards associated with pressurisation failure;
            5.        ensure the use of emergency oxygen by crew members and passengers when cabin altitude is greater than 10,000 ft;
            6.          advise ATC of flight situation, action taken by pilot in command and any requirements.

 2.                     Range of variables
        1.        activities are performed in accordance with published procedures;
        2.        VFR or IFR in variable weather conditions;
        3.         approved aircraft fitted with pressurisation system;
        4.        variable temperatures and environmental conditions;
        5.        simulated abnormal and emergency situations.

 3.                     Underpinning knowledge of the following:
        1.        pressurisation failure warning indications fitted to the aircraft type flown;
        2.        the cabin pressure at which the cabin pressurisation warning light illuminates;
        3.         conditions that will cause a pressurisation failure indicator to activate;
        4.        functions of bleed air with respect to an aircraft pressurisation system;
        5.        how bleed air pressure and temperature are controlled (modified) to meet cabin pressurisation and temperature requirements;
        6.          procedure for manual control of cabin pressurisation applicable to the aircraft type flown;
        7.        what a pressure differential gauge indicates to a pilot with respect to a pressurisation system;
        8.        maximum pressure differential for the aircraft type