Garmin Unveils In-Flight Carbon Monoxide Detector

The remote-mount GCO 14 unit can interface with select Garmin avionics, enabling the pilot to detect and monitor dangerous and potentially deadly carbon monoxide levels.

Carbon monoxide, a by-product of internal combustion engines, is a tasteless and odorless gas that can incapacitate a pilot before they realize there’s a problem. With the CO monitor, pilots will be able to view exposure levels through user data fields or a dedicated page. 

If potentially harmful levels are detected, the GCO 14 provides both aural "carbon monoxide" and visual alerts flashing "CO Level" when the avionics are connected to an audio panel. Pilots may use preset alert thresholds or set custom limits for advisory messages, the company said.

According to Garmin, the GCO 14 seamlessly integrates carbon monoxide level monitoring and alerting into GTN Xi navigators, GI 275 flight instruments, and TXi flight displays. The GCO 14 module fits easily behind the aircraft’s panel and includes the required wiring harness for installation. The GCO 14 can be easily disconnected and replaced via a four-pin connector.

The GCO 14 is expected to be available in the second quarter of 2025 through Garmin-authorized dealers with a list price of $549. The GCO 14 meets FAA TSO-C48A for use in certified aircraft and boasts a sensor life of up to 10 years, Garmin said.