Carbon monoxide
So read the mail in Pilot about CO detectors and talk of the recent accident and one that was on offer for nearly £100.
I bought a couple of CO detectors with a digital readout, £6 each and fitted to aircraft.
They seem to work as the one often shows 30-40ppm when certain maneuvers cause fumes to enter cabin.
So i began to wonder what are the effects of this low level CO contamination.
I think the alarm function is set to go off at 300ppm.
Strangely it also detected a fuel leak in the cabin.
The only time i have really felt bad in aircraft was when the crankcase vent pipe outlet wasn't positioned to exit in the free stream.