About the SUMMA CORP 369D
The Hughes 369D, also known as the MD 500D, is a light utility helicopter of note in the general aviation sector. It traces its lineage back to the OH-6A Cayuse, a military helicopter developed in the 1960s by Hughes Helicopters (which later became part of McDonnell Douglas). The OH-6A was known for its versatility, ruggedness, and exceptional performance in various missions, particularly during the Vietnam War. Building on the success of the OH-6A, Hughes sought to create a civilian version that could serve a wide range of industries where agility and reliability were paramount. Thus, the Hughes 369 model line was born, with the 369D being one of its most prominent members. The Hughes 369D made its debut in the late 1970s and quickly gained a reputation as a workhorse in the light helicopter market. It featured a more powerful Allison 250-C20B turboshaft engine, which allowed for improved performance, higher speeds, and greater payload capacity compared to its predecessors. The helicopter's five-blade main rotor system further enhanced its smooth handling and flight stability. In terms of design, the 369D maintained the sleek, aerodynamic shape characteristic of Hughes helicopters, which contributed to its efficiency and agility. The aircraft was designed for a variety of applications including law enforcement, emergency medical services, agricultural operations, and executive transport. Its compact size and superior maneuverability made it particularly effective in urban environments and other areas where space was limited. Additionally, the 369D was lauded for its low operating costs and ease of maintenance, making it a popular choice among private owners and commercial operators alike. The Hughes 369D stands as a testament to innovative helicopter design, providing reliable service across multiple sectors for decades. Its success also paved the way for further developments in the Hughes/MD helicopter lines, ensuring its legacy in the annals of aviation history.