Alaska Pilots Face Invisible, Potentially Deadly Threat

Alaska Pilots Face Invisible, Potentially Deadly Threat

Carbon monoxide is an odorless, colorless gas that is a byproduct of internal combustion engines. Many internal combustion engine airplanes are heated by air that has been warmed by circulating air around the exhaust system using a heater shroud. A defect or leak in the exhaust pipes or muffler can introduce carbon monoxide into the cockpit. Continued exposure increases risks to aviators, including impaired judgement, oxygen starvation, loss of control, and eventually incapacitation and death.