
MagCheck Monitors Aircraft Magneto Health In Flight
MagCheck is an aviation safety device that continuously monitors magneto high voltage and alerts the pilot when a magneto failure is detected.
Designed for piston aircraft and rotorcraft, MagCheck gives pilots a clear warning when magneto failure awareness matters most.
FAA NORSEE Approved | For Piston Aircraft & Rotorcraft | Standalone or EFIS-Compatible

Magneto Failures Can Happen Without Warning
A normal run-up check only shows magneto condition before takeoff. It does not continuously monitor magneto health during flight.
MagCheck helps close that awareness gap by watching magneto high-voltage activity while the aircraft is operating.
Before Takeoff
Run-up checks help confirm magneto operation before flight, but they only show condition at that moment.
During Flight
MagCheck continues monitoring magneto high-voltage activity while the aircraft is operating.
When Failure Occurs
The pilot receives a clear alert instead of guessing whether a magneto issue has occurred.
MagCheck is a compact aviation safety monitoring device designed to detect magneto high-voltage failure during aircraft operation.
It can be installed with its own standalone annunciator or connected to compatible EFIS systems.
MagCheck is designed for piston aircraft and piston rotorcraft, including experimental and certified aircraft applications where appropriate.
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Continuous magneto high-voltage monitoring
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Immediate pilot alert when a failure is detected
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Standalone annunciator option
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Compatible EFIS tie-in option
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Designed for piston aircraft and rotorcraft
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Powered by standard 5V USB
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Installation kit designed for efficient installation
MagCheck is designed to make magneto failure awareness simple. The system monitors, detects, and alerts without requiring the pilot to interpret complex data.
1. Monitor
MagCheck monitors magneto high-voltage activity while the aircraft is operating.
2. Detect
If a magneto failure condition occurs, the system identifies the failure.
3. Alert
The pilot receives a clear warning through the annunciator or compatible EFIS display.
MagCheck is designed for use in piston-powered aircraft and rotorcraft. It is positioned as non-required safety equipment and should be installed in accordance with the product installation instructions and applicable maintenance practices.
Experimental Aircraft
Designed for pilots and builders who want additional ignition-system awareness during flight.
Certified Aircraft
Designed for certified aircraft applications where appropriate under FAA NORSEE positioning.
Rotorcraft
Applicable to piston rotorcraft installations where magneto monitoring provides added safety awareness.
Built for Aviation Safety Awareness
MagCheck was developed to give pilots a clearer indication of magneto failure during operation. The system is designed to support aviation decision-making without replacing normal inspection, maintenance, or pilot responsibility.
FAA NORSEE Approved
Designed for non-required aviation safety awareness applications.
A&P-Friendly Installation
Installation is designed to be completed efficiently by a qualified mechanic or technician.
Standalone or EFIS-Compatible
Use MagCheck with its own annunciator or integrate it with compatible EFIS systems.
Supported by MagCheck LLC
Product information and support are provided directly by MagCheck LLC.
FAQ Page
Frequently asked questions
Inflight Magneto check goes wrong when key break off in ignition
By NTSB August 16, 2024

The pilot, seated in the left seat, said that the instructor pilot, seated in the right seat, asked her to perform a magneto check inflight.
During the magneto check, she inadvertently turned the ignition key to the off position, resulting in a total loss of engine power to the Cessna 172.
As she turned the key to restart the engine, the head of the ignition key broke off.
The instructor pilot attempted to move the ignition key but was also unsuccessful.

The instructor pilot took the controls and performed an emergency landing onto a school football field near Gates Mills, Ohio.
The airplane landed hard and sustained substantial damage to the firewall, both wings, engine mount and fuselage. Both pilots sustained injuries in the crash.
Probable Cause: The instructor pilot’s decision to perform an inflight magneto check with no suitable area to land. Contributing to the accident was the pilot’s failure to correctly perform a magneto check that resulted in a total loss of engine power.
Contact Us
Interested in MagCheck for your aircraft, shop, or dealership? Send us a request and MagCheck LLC will contact you with product information, compatibility guidance, and next steps.
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