3.2 Blog Discussion: Aircraft Systems and Flight: The ECS system

 The Environmental Control System


The Environmental Control System is made up of subsystems that help maintain the air pressure, and allow the aircrafts atmosphere to be comfortable for people, avionics systems in the aircraft, and other possible items that may be on board (Ruch, 2017).

During a partial failure of the Environmental Control System, depressurization of the cockpit and cabin can happen relatively fast or even gradually slow (Skybrary, 2021). Additionally, a partial failure can result in the loss of the ability for pilots of receiving oxygen through the subsystem of the Environmental Control System called Onboard Oxygen Generating System (OBOGS) (Skybrary, 2021). This can result with pilots and cabin members of experiencing a further emergency called hypoxia due to the lack of oxygen going to the brain while in the air (Skybrary, 2021). 

During a complete failure of the Environmental Control System, the Onboard Oxygen Generating System will fail causing the pilots to perform an emergency procedure and reduce altitude to lessen the effects of lack of oxygen being so high in the air(Skybrary, 2021).  Additionally, the Bleed Air System will fail and cause loss of the Anti-Icing System, damage to aircraft wiring, and also damage to other pneumatically controlled systems (Skybrary, 2021). Having pilots don secondary oxygen equipment will allow the pilots to make an emergency landing using VFR minimizing the
effects of the different failures of the aircraft.


References:

skybrary. (2021).  Loss of Cabin Pressurisation - SKYbrary Aviation Safety. Retrieved September 27, 2021, from https://www.skybrary.aero/index.php/Loss_of_Cabin_Pressurisation#Effects.

Skybrary. (2021). Bleed Air Leaks - SKYbrary Aviation Safety. Retrieved September 27, 2021, from https://www.skybrary.aero/index.php/Bleed_Air_Leaks.




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