Document ref no.
CAAT-CAN-2021-05
Subject
Preventing Carbon Monoxide Poisoning in Piston Engine Aircraft
Issue date
19 August 2025
Applicability
All piston engine aircraft have the potential for Carbon Monoxide (CO) poisoning from cracked exhaust units and unserviceable heat exchange assemblies. This situation can be further exacerbated by the CO gas penetrating through an unsealed firewall and can go unnoticed through the fitment of inadequate or inappropriate CO detection units.
For the attention of
Aircraft Operators