CIES Inc

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.

04/16/2026

We’re having a great time at the Sun 'n Fun Aerospace Expo this week!

The weather has been perfect, the conversations have been even better, and it’s always a highlight getting to connect with so many in the aviation community.

If you’re here, come say hello—we’d love to meet you. You can find us in Hangar A!

04/14/2026

When it comes to aircraft maintenance and troubleshooting, documentation isn’t optional—it’s essential.

Records that include part numbers, wiring configuration, and calibration data make future troubleshooting significantly faster. Without that baseline data, even simple issues can turn into time-consuming diagnostics.

Take the extra time today to document thoroughly. It pays off every time you (or the next tech) need to trace a problem.

04/09/2026

We’re heading to Sun ’n Fun 2026!

Join us in Hangar A — Booth A079 — at the Sun ’n Fun Aerospace Expo in Lakeland, Florida next week. Stop by to see the latest in accurate, reliable fuel quantity solutions and talk with our team.

We look forward to seeing you there.

03/31/2026

For this Tech Tip Tuesday, let's discuss water intrusion. Water intrusion is a silent killer for fuel gauge accuracy, especially on Piper Navajos and Aztecs.

The Problem: Access panels located directly above top-mounted senders are notorious for leaky seals. While CiES sensors are internally potted against moisture, exposed wiring and connectors can still short out if water pools on top of the tank.

The Fix: Verify panel sealing and use environmentally-sealed connectors.

Don't let a bad seal lead to a bad reading. Keep it dry, keep it accurate!