Abstract

Bleed air ECS extract air from engine compressor and is subject to increase the toxic chemicals in the cabin air. One of the most harmful of them is Tri-Cresylic Phosphate (TCP). It is a common anti-wear additive used in jet engine oils and exposure to this chemical increases the risks of various adverse health effects. Additionally, the European Aviation Safety Agency (EASA) which implements and monitors safety issues in aircrafts has yet to come up with an exposure limit for TCP’s. The effect of TCP and its filtration is analyzed and showed that by means of Carbon Active filters can be reduced. 

Keywords

TCP, bleed air, filters, fresh air supply, fume event, aero-toxic syndrome