Exhaust in cabin, Tecnam p2002
Hi folks.
I have slight but noticable exhaust smell in the cockpit of a p2002 so I flew with an accurate Carbon Monoxide detector to double check and results confirmed an issue.
27ppm CO in cruise
45ppm CO on descent
65+ppm CO in stall
Now how to fix it. Has anyone had any experience resolving CO in the cabin issues?
Changing cabin heat and fresh air vent postions did not help. I suspect ingress from the belly or tail cone rather than a cracked exhaust at this stage.
Would greatly appreciate any pointers for where to start looking.
FYI, AOPA discussion and Mike Busch's research referenced below.
AOPA article: blog.aopa.org/aopa/2014/10/20/carbon-monoxide-silent-killer/
Savvy Aviation Webinar: youtu.be/vgKPiZc8drQ
Detector used for flight check: sensorcon.com/products/professional-flue-gas-carbon-monoxide-analyser-kit?variant=4193503748
Summary excerpt (AOPA):
After studying this hazard for many years and consulting with world-class aeromedical experts, I have come to the following conclusions:
1. Every single-engine piston aircraft should carry a sensitive electronic CO detector.
2. Any in-flight CO concentration above 10 ppm should be brought to the attention of an A&P for troubleshooting and resolution.
3. Any in-flight CO concentration above 35 ppm should be grounds for going on supplemental oxygen (if available) and making a precautionary landing as soon as practicable.
4. Any in-flight CO concentration above 70 ppm should be grounds for declaring an emergency.