Inspection of exhaust systems and engine firewalls: are they carbon monoxide safe? Safety Advisory Notice

“The primary mechanism for the prevention of carbon monoxide exposure to aircraft occupants is to carry out regular inspections of piston-engine exhaust systems to identify and repair holes and cracks, and to detect breaches in the firewall between the engine compartment and the cabin.”

https://www.atsb.gov.au/publications/safety-advisory-notice/ao-2017-118-san-001/

Sydney Seaplanes crash: Carbon monoxide poisoning blamed for 2017 fatalities

Sydney, Australia – “The ATSB considers the levels of carbon monoxide were likely to have adversely affected the pilot’s ability to control the aircraft…”

https://www.news.com.au/travel/travel-updates/health-safety/sydney-seaplanes-crash-carbon-monoxide-poisoning-blamed-for-2017-fatalities/news-story/f5f0f6ab476a887b6c9ecc93eab2e4f2?fbclid=IwAR0if_G_afaKD8tjs0cRXQrGaIWQTJ6A0vqoE_MltDMGzhenB8-halKh_NA#.h8lqc