CIES Inc

06/17/2026

: Repeatability Matters

Accurate fuel indication isn't just about getting the right reading—it's about getting the same reliable reading every time.

Traditional mechanical float-arm senders can experience hysteresis, meaning the indicated fuel level may differ depending on whether the tank is being filled or emptied. The wiper moving across a resistive track can also introduce mechanical wear and electrical variability over time.

CiES digital fuel senders use non-contact AMR sensing to determine float position, eliminating the wiper-to-track interface. The result is improved measurement repeatability across the operating range, giving pilots more consistent fuel level information they can trust.

Accurate Before Empty.

06/11/2026

Congratulations to the Textron Aviation team on another exciting milestone! It's great to see the Cessna Citation M2 Gen3 take flight and move into the flight test phase. Wishing the entire team continued success as they advance this next generation of one of aviation’s most popular light jets.

06/03/2026

There's a reason so many pilots say they wish they had upgraded sooner.

Accurate fuel information brings confidence to every flight. With CiES fuel senders, pilots can move beyond the uncertainty of wandering fuel gauges and trust what they're seeing in the cockpit.

Thank you, Rodrigo, for sharing your experience!

05/19/2026

Fuel totalizers and fuel level indication serve two very different purposes.

A totalizer estimates fuel remaining based on fuel flow data, but it can’t detect leaks, improper fueling, or fuel loss from an unsecured cap. Reliable fuel level indication provides an independent verification of the actual fuel onboard.

At CiES, we manufacture fuel level indication senders designed to give pilots accurate, dependable fuel quantity information when it matters most.

05/13/2026

Go behind the scenes at CiES Inc. and see how we’re redefining fuel measurement for aviation safety.

From our mission to eliminate fuel uncertainty to the technology powering precise, repeatable readings—this is the story behind “Accurate Before Empty.”

Watch now and discover how we’re helping pilots fly with confidence.



Special thanks to Reverb Films!

At CiES Inc., we have a singular focus: improving aviation safety through precision and reliability. This video takes you behind the scenes to show the passi...

05/06/2026

Calibrating a Cirrus SR22 G2 CiES Fuel Quantity Retrofit at Bend Aircraft

05/05/2026

Just did a new install of CiES fuel senders to JPI indicator. The difference between the Cessna floats and CiES is nothing short of amazing. Highly recommend the product.”
— Keith Stout, Cessna 185 Skywagon

Upgrading from legacy systems isn’t just a change—it’s a transformation in fuel confidence.

Unconvinced? View 55+ testimonials here: https://ciescorp.net/about/testimonials/

05/02/2026

Huge thanks to Bend Aircraft Mechanics for helping us refine and simplify our installation instructions for the Cirrus SR22 G1/G2. We love collaborating with installers to make everything as clear and user-friendly as possible.

04/29/2026

We’re excited to be heading north for the Great Alaska Aviation Gathering 2026!

CiES is proud to support the aviation community as a Bronze Sponsor of this incredible event hosted by the Alaska Airmen Association. GAAG brings together pilots, maintainers, and aviation professionals from across Alaska and beyond,and we’re honored to be part of it.

If you’re attending, be sure to connect with us and learn how our fuel measurement technology is helping improve accuracy, safety, and confidence in the cockpit.

Learn more about the event: https://www.alaskaairmen.org/greatalaskagathering

04/21/2026

Here's another Tuesday Tech Tip! Confirm the aircraft indication system matches the sender output type.

Not all indicators interpret signals the same way—ensure compatibility between the sender, converter, and cockpit display.

CiES systems provide digital frequency output on the blue wire as standard. When analog output is required, a voltage output is added on the green wire without removing the digital output.

Using the incorrect signal type for the installed indicator will result in improper—or no—fuel level indication.