The National Transportation Safety Board (NTSB) recently released a recommendation that the FAA require all enclosed-cabin aircraft with reciprocating engines to be equipped with a carbon monoxide (CO) detector. This decision came after reviewing several fatal accidents and determining their cause to be carbon monoxide poisoning.
You can read the entire report from the NTSB here.

ForeFlight’s Sentry ADS-B receiver meets the recommendation and provides a simple solution to protecting you and your passengers from this invisible danger with a built-in carbon monoxide sensor. When using Sentry in conjunction with the ForeFlight app, an audio alert is delivered through compatible headsets, and an alert message is displayed on the screen. In addition, the middle LED indicator on Sentry also provides a visual indication when CO levels in the cabin are dangerously high.
The portable and affordable Sentry device also delivers additional safety benefits such as ADS-B weather and traffic and WAAS GPS making it the most advanced ADS-B & GPS receiver in the industry.
Additional Safety Features

Inflight Traffic Alerts
ForeFlight doesn’t just show you where the traffic is, it tells you. Visual and audio alerts provide the distance, direction, and relative altitude of ADS-B traffic targets.

Synthetic Vision
ForeFlight Synthetic Vision provides a backup glass cockpit on your iPad that can help you stay aware of your position and surroundings in normal and emergency operations. Combined with Sentry, Synthetic Vision provides super responsive pitch and bank in addition to terrain and obstacle depictions.

Inflight Weather
With Sentry you can access subscription-free FIS-B weather & data. Display animated regional and CONUS NEXRAD, METARs, TAFs, AIR/SIGMETs, PIREPs, textual winds and temps aloft, TFRs, NOTAMs, and SUA information on ForeFlight Mobile.

Inflight GPS
Sentry’s highly-accurate WAAS GPS shows your aircraft position on ForeFlight’s moving map display and innovative Plates on Map feature. Sentry supports four GNSS systems (WAAS GPS, Galileo, GLONASS, and BeiDu), and can track three constellations concurrently for redundant location tracking. View a variety of inflight data, including ground speed, altitude, ETE, distance to destination, and more.
Testimonials
FRANK BAGHERI: CFI / CFII / CIVIL AIR PATROL (CAP) MISSION PILOT
RYAN KNAUER: CORPORATE PILOT / FORMER FIREFIGHTER AND FLIGHT PARAMEDIC
MIKE MCCLENDON:BRIGADIER GENERAL IN THE AIR FORCE & FOREFLIGHT MILITARY CONSULTANT