Bristell B23 Energic Almost Too Quiet To Track

In early July of this year, H55’s Bristell B23 Energic, during its Across America Tour, made a several-day stop at Centennial Airport (KAPA) outside of Denver, Colorado, where it flew the same flight path as a comparable-sized piston engine aircraft across the airport’s six official noise-monitoring stations.

The hot-off-the-press results show that the B23’s noise profile was below ambient sound – undetectable – by 3 of the 6 sensors, and the remaining sensors recorded the B23 at 1/10th the intensity measured for the piston aircraft.

Centennial has had a robust noise monitoring system in operation since 2014 as well as a very active Community Noise Roundtable that conducts monthly meetings with airport management, local government leaders, and aviation organization representatives, with members of the public also invited.

Michael Fronapfel, CEO of Centennial Airport said, “Electric aviation isn’t the future—it’s here. The B23 Energic offers noise levels so low, they’re almost too quiet to track. This has real-world implications for airport communities. It’s a level of performance we’ve never seen before in general aviation.”

Zach Gabehart is the Noise & Environmental Specialist for Centennial Airport. He said, “Across multiple flights, the B23 Energic consistently came in 30 times quieter than similar aircraft during cruise. If this keeps up, I might be out of a job.”

Electric propulsion is hydrocarbon fuel-free, neighbor-friendly, regulator-approved, and are becoming increasingly appreciated by airports and operators alike.

Some of the benefits electric aircraft provide are:

• Longer training hours—say goodbye to neighbor noise complaints
• Lower environmental impact—no emissions, no exhaust
• Quieter skies—better community relations
• Future-proof compliance—ready for tomorrow’s regulations today

Martin Larose, CEO of H55 said, “This test proves that electric aviation delivers not just environmental benefits, but tangible advantages for the communities around airports. We’re proud to offer a certified propulsion system that helps make aviation more affordable, more sustainable, and more silent.”

H55 and its Bristell B23 Energic are currently on their way to one of the most noise-sensitive locales in the country: the Hamptons. They’ll be conducting flights from August 6-10, and we await to hear about their reception there.

FMI:  h55.ch/