• Cabin breathing air on all aircraft apart from the Boeing 787 is taken directly from the engines and provided unfiltered to the aircraft. This is known as 'Bleed Air'.
• Bleed air is known to become contaminated with engine oils and/or hydraulic fluids...
• Contaminated bleed air events have been recognised as occurring since the 1950s.
• No aircraft currently flying has any form of detection system fitted to warn when these events occur.
• Flight safety is being compromised by contaminated air events.
• Crew and passengers have been reporting short and long term health effects as a consequence of exposure to contaminated air.
• Contaminated air events are not rare and known to be under reported.

Members of the GCAQE include: ACPA, Aeropers, AFA, AIPA, ALAEA, CUPE, FSC-CCOO, Icelandic ALPA, IPA, PARAT, SAFE, SNPL, SNPNC, SWEALPA, TWU, UFO, Unite, Vereinigung Cockpit, VERDI and VNC.