EMI Mitigation for Commercial Aerospace

Rugged, Retrofit EMI and Radiated Emissions Protection for Complex Aircraft Electronics
Modern commercial aircraft and aerospace systems are packed with sophisticated electronics, both inside and outside the cockpit. As navigation, flight controls, sensors, and communication systems grow more advanced, power densities rise and available space shrinks, electromagnetic interference (EMI) becomes a greater risk to system performance.
Meanwhile, the EMI burden is multiplied by in-flight connectivity and entertainment systems, myriad passenger devices, and high-power transmitters alongside external sources like ground towers, radar, and lightning.
Commercial aircraft and aerospace engineers must account for this dramatic increase in potential EMI to ensure uninterrupted performance and safety.
Quell’s EESeal® and EESeal+ EMI filter inserts for connectors provide a compact, field-installable solution for managing EMI in commercial aircraft and aerospace systems. They integrate seamlessly into existing connectors without requiring a redesign to deliver instant mitigation up to 100GHz.
Lightweight (<1g) and virtually invisible once installed, EESeal filter inserts are designed to meet global aerospace standards like RTCA DO-160 and MIL-STD-461 for robust protection against temperature cycling, vibration, shock, and more.
With proven use across thousands of applications such as jetliners, business jets, and rotorcraft, these retrofit EMI filter inserts simplify compliance, reduce downtime, and deliver high-reliability EMI suppression in harsh flight environments.
Key Applications

Avionics & Flight
Control Systems
Preserve signal clarity and performance in critical digital flight computers, fly-by-wire systems, and cockpit interfaces.

Airborne Sensors
& Monitoring
Shield cabin pressure, engine sensors, and environmental monitoring systems from disruptive EMI.

Navigation &
Communication Systems
Safeguard GPS, SATCOM, and other directional and in-flight comms systems against internal and external interference.

Aircraft Structural & Environmental Systems
Reduce EMI risks to pressurization, lighting, climate control, fuel management, and other cabin subsystems without redesigns.