H55's electric aircraft flies so quiet, that during a noise measurement test, theBristell B23Energicpowered byH55 propulsion system was so quiet that the electric aircraft flew without triggering three of six official noise-monitoring sensors.
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On11July2025,theB23Energic flewidenticalflightpathsalongside acomparablepiston-engine across the airport's six official noise-monitoring stations:
— 3 of 6 sensors recorded no aircraft noise-the B23 flew below ambient sound thresholds (60 dB)
— The remaining sensors registered the B23Energic at1/10thofintensityofthenoise measured in comparison to the piston aircraft
“Electric aviation isn't the future-it's here,”said Michael Fronapfel, CEO of Centennial Airport. “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.”
ABreakthroughYouCan'tHear-ButCommunitiesWillAppreciate
“Acrossmultipleflights, theB23Energic consistentlycamein30times quieterthansimilar aircraft duringcruise,”said Zach Gabehart, Centennial Airport's Noise & Environmental Specialist.”If this keeps up, I might be out of a job.”
Electricpropulsionisn'tjustfuel-free-it'sneighbor-friendly,regulator-approved,andairport-operator- loved.With the B23 Energic, airports and flight schools can now enjoy:
— 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
CertifiedTechnology,Real-WorldBenefits
“This test proves that electric aviation delivers not just environmental benefits, but tangible advantages for the communities around airports,” said Martin Larose, CEOofH55.”We'reproud toofferacertified propulsion system that helps make aviation more affordable, more sustainable, and more silent.”
TheHamptons:ExperiencetheSilence Yourself,August4-102025
TheB23Energic iscurrentlymakingitswaytooneofthemostnoise-sensitiveregionsintheU.S.- the Hamptons.
AspartofitsAcrossAmericatour,H55willhostdemoflights,technologyshowcases,andstakeholder briefings in East andWest Hampton from August 4-10, inviting the public and the aviation community to witness the future of clean flight.
ScheduleofAppearances:
— Francis S.GabreskiAirport (KFOK):August6-7
— East Hampton Town Airport (KJPX): August4-5&8-10
RSVPtoflythefuture,visit: across-usa.h55.ch
Toscheduleameetingorinterview,please contact:
TamarBurton-U.S.MediaRelations tamar.burton@h55.ch
About H55
H55 is a Swiss-based company founded by the former Solar Impulse management team:André Borschberg,SebastienDemont, andGregoryBlatt. Dedicatedtorevolutionizingtheaviationindustry, H55 provides certified electric propulsion and battery management systems tailored to a diverse range of aircraft, aiming to achieve sustainable air travel.H55 supplies certified electric propulsion systems with full airplane integration solutions for general aviation and regional transport aircraft.Through its pioneering legacy and commitment to certified solutions, H55's team of visionary engineers andaerospaceexperts areattheforefrontofdrivingtheaviationindustry settingnew standards and pushing the boundaries of electric aviation.Formoreinformation,visit:www.h55.chorcontactpress@h55.ch
Media Contact tamar.burton@h55.ch
www.h55.ch
H55SARoutedel'Aéroport10 1950 SionSwitzerland
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SOURCE H55
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