Why the CRJ200s lack of HEPA filter doesnt actually matter

After seeing and being part of many discussions online in relation to the CRJ 700 & 900s use of HEPA filters and the CRJ200s lack of use, I thought I would take this time to put my eight and a half plus years of aircraft maintenance experience on these planes to use and using some system knowledge explain in depth why the lack of HEPA filter on the CRJ200 does not at all matter. (www.youtube.com) Más...