Legacy Cirrus G3 Aircraft Gain Modern Fuel Awareness with CiES and Garmin Perspective+

CiES brings fuel quantity into Garmin’s Crew Alerting System (CAS) through fail-evident design and digital communication, advancing fuel awareness for legacy aircraft

BEND, Ore. — March 31, 2026 — CiES announced today that legacy Cirrus G3 aircraft can achieve a major step forward in fuel awareness through the Garmin Perspective+ upgrade, creating a clear pathway from legacy fuel indication to a more modern, fully monitored cockpit environment.

For years, G3 aircraft relied on analog senders and conventional gauge-based low-fuel warning. Fuel quantity was available to the pilot, but it remained largely isolated from the broader avionics architecture.

With CiES, that changes.

By bringing fuel quantity into Garmin’s Crew Alerting System (CAS) through fail-evident design and digital communication, CiES enables a fully monitored fuel state and a materially improved level of cockpit awareness. The result is a more integrated fuel information environment that supports better pilot recognition, better messaging, and stronger operational confidence.

“Fuel gauges have always had a reputation,” said Scott Philiben, President of CiES. “We built ours by doing it better. This upgrade is about more than replacing legacy indication. It is about bringing fuel quantity into Garmin’s Crew Alerting System with fail-evident design, digital communication, and the kind of performance that supports real pilot confidence. That is what Accuracy Before Empty means.”

The progression of fuel awareness across Cirrus generations is clear:

• G3: Analog senders with gauge-based low-fuel warning
• G5 / Perspective+: CiES brings fuel quantity into Garmin’s Crew Alerting System (CAS) through fail-evident design and digital communication, enabling a fully monitored fuel state and significantly improved CAS messaging
• G6 / G7 with CiES: The next layer of integration becomes available with CiES, including digital quantity representation, Fuel on Board functionality, imbalance monitoring, and fuel tank change messaging

This progression reflects a broader shift in cockpit capability. Fuel indication is no longer just a standalone reading. With CiES, it becomes part of an integrated awareness model inside the avionics workflow.

CiES fuel quantity systems eliminate mechanical wear interfaces and provide stable, repeatable digital measurement across the usable fuel range. That performance, combined with fail-evident architecture and CAS integration, has played a significant role in building the strong reputation CiES holds in the market today.

CiES fuel senders are standard on current-production Perspective+ Cirrus aircraft. For legacy G3 operators, the upgrade provides a compelling opportunity to align more closely with current production fuel awareness standards while benefiting from the same core design philosophy now proven in the field.

At the center of that value proposition is the CiES commitment to Accuracy Before Empty™.

Accuracy Before Empty is more than a tagline. It reflects the company’s focus on delivering consistent, certification-backed performance across the usable fuel range, where reliable fuel information matters most. For aircraft owners and operators, that means fuel data that supports awareness earlier, more clearly, and with greater confidence.

CiES fuel quantity systems are TSO-certified, with accuracy defined, verified, and required within the applicable certification framework. For operators in the United States, Europe, and Brazil, that creates a modern retrofit pathway that strengthens fuel awareness, supports pilot confidence, and brings legacy aircraft closer to current production standards.