Grumman Cougar
History's Unique AircraftThe Clandestine Legacy of the Helio Twin Courier
Designed during an era of twin fever, the expeditionary H-500 blended rotary-wing utility and fixed-wing speed.
Jason McDowell![](https://www.flyingmag.com/uploads/2023/01/Twin-Courier-Side-Stephen-Miller-e1673299507328.jpeg?auto=webp&auto=webp&optimize=high&quality=70&width=1440)
![](https://www.flyingmag.com/uploads/2022/09/Pilot-and-copilot_adobe-stock-rs.jpg?auto=webp&auto=webp&optimize=high&quality=70&width=1440)
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