STC Approvals expand access to CiES fuel quantity technology for aircraft integrating with electronic engine and aircraft indication systems from Garmin and other avionics manufacturers
BEND, Ore. — April 12, 2026 — CiES announced today that its advanced fuel quantity systems have received EASA and ANAC approval, expanding access to CiES technology for aircraft operators in Europe and Brazil and strengthening the company’s international certification position.
The approvals expand access to CiES fuel quantity technology for aircraft integrating with electronic engine and aircraft indication systems from Garmin and other avionics manufacturers, extending the benefits of fail-evident design, digital communication, and more fully monitored fuel-state awareness to a broader international market.
Rather than remaining a standalone indication input, fuel quantity can be brought into the aircraft’s electronic engine and aircraft indication system, where it becomes part of a more integrated awareness model. Through fail-evident design and digital communication, CiES supports a more transparent and reliable fuel-state architecture, helping improve system visibility, alerting quality, and pilot confidence.
“These approvals are an important milestone for CiES and for the international operators we serve,” said Scott Philiben, President of CiES. “They expand access to our technology in Europe and Brazil while reinforcing the value of bringing fuel quantity into modern electronic engine and aircraft indication systems through fail-evident design and digital communication. That is central to what we mean by Accuracy Before Empty™.”
CiES fuel quantity systems eliminate mechanical wear interfaces and deliver stable, repeatable digital measurement across the usable fuel range. When integrated into electronic engine and aircraft indication systems, that performance supports a more cohesive cockpit fuel-awareness model and helps modernize the pilot’s relationship with fuel information.
The real-world value of that capability is especially clear in specialized applications such as DHC-2 Beaver tip tanks. This is a limited but important segment where indication did not previously exist, despite the aircraft’s demanding mission profile and frequent commercial use. By providing fuel quantity indication for Beaver tip tanks, CiES helps operators establish the aircraft’s total initial fuel state more easily and more reliably before flight.
That matters.
For an aircraft commonly operated on floats or conventional landing gear, checking fuel state directly can be less convenient, less consistent, and potentially less safe. In commercial service where you find these aircraft, aircraft loading, dispatch readiness, and operational margins matter, and knowing the initial fuel state is critical. CiES directly addresses that safety need by putting fuel information where it can be readily seen, interpreted, and used.
The significance of the EASA and ANAC approvals extends beyond certification alone. They create a clearer pathway for aircraft owners, operators, and installation partners to adopt CiES technology within approved international frameworks, while also supporting broader retrofit, aftermarket, and OEM-aligned opportunities outside the United States.
CiES has built its reputation by advancing fuel quantity from a legacy sensing function to a more reliable and more transparent avionics input. The same design philosophy applies across modern electronic engine and aircraft indication systems: accurate digital measurement, fail-evident architecture, and strong compatibility with contemporary cockpit display environments.
At the center of that value proposition is Accuracy Before Empty™ — the CiES commitment to consistent, certification-backed performance across the usable fuel range, where reliable fuel information matters most. For operators in Europe and Brazil, these approvals represent expanded access to a fuel quantity solution designed to support better awareness, stronger confidence, and a more modern cockpit experience.
About CiES
CiES designs and manufactures advanced fuel quantity systems for general aviation and transport applications. Through solid-state sensing, fail-evident architecture, and digital avionics integration, CiES has earned a strong reputation for delivering reliable, repeatable fuel measurement and advancing cockpit fuel awareness.
Media Contact:
Danielle Quirk
CiES
[email protected]
Accuracy Before Empty™
Fuel quantity indication is provided in accordance with applicable certification standards. Pilots must operate the aircraft within approved limitations and procedures.