Carbon monoxide in jump aircraft: the hazard nobody can smell
USPA highlights CO risk in piston aircraft. Symptoms can resemble fatigue or altitude effects, so protection depends on detection and exhaust-system integrity.
AI artCarbon monoxide is colourless and odourless. In a piston aircraft it can enter the cabin through defects in exhaust or heating systems or through a compromised firewall. Without a detector, occupants may not know exposure is occurring until symptoms develop.
Symptoms with plausible wrong explanations
Headache, dizziness, weakness, nausea and confusion can be attributed to stress, fatigue, dehydration or altitude. Before a jump, reduced concentration may affect gear checks, task execution and emergency response.
Protection needs several layers
- inspection and maintenance of exhaust and heating systems under approved documentation
- a functioning CO detector suitable for aviation use and tested before flight
- a known alarm and an agreed response for pilot and staff
- ending exposure and obtaining medical assessment when poisoning is suspected
USPA identifies electrochemical detectors as well suited to the operational environment. FAA guidance makes the broader point: detection is an additional layer and never a replacement for maintenance or correction of the leak source.
The practical lesson for jumpers is simple: sudden shared illness among several aircraft occupants must not be normalised. It is information the crew needs immediately.