21-00-00  AIR CONDITIONING - GENERAL Back

A. System Function

The air conditioning system has these functions:
  • To supply filtered conditioned air, at the correct temperature and pressure, to the flight compartment and the passenger cabin (the pressurized compartment)
  • To control the flow of air into and from the pressurized compartment
  • To give indications and warnings of the condition of the system
B. Sub-systems (Ref. Fig. 1)

  • Compression sub-systems supplies filtered bleed air from each engine to the cooling Sub-system. (Ref. 21-10-00)
  • Distribution sub-systems supplies conditioned air to the pressurized compartment. (Ref. 21-20-00)
  • Pressurization control sub-systems controls the flow of air from the pressurized compartment to control the cabin differential pressure. (Ref. 21-30-00)
  • Cooling sub-system supplies cool air to the air conditioning system during the operation of the engines. (Ref. 21-50-00)
  • Temperature control sub-systems controls the temperature of the conditioned air in the pressurized compartment. (Ref. 21-60-00)
  • Moisture/Air contaminant control sub-systems removes water from the conditioned air as it leaves the cooling Sub-system. (Ref. 21-70-00)

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