N181SD

N181SD is a Bell Helicopter UH-1 Iroquois operated by ORANGE COUNTY SHERIFFS DEPARTMENT. SkyMeter has tracked 194 flights totalling 249 hours of airtime via ADS-B across 2 callsigns. Service window in our records spans 181 days. The Bell Helicopter UH-1 Iroquois has a maximum takeoff weight of 9,500 lb, medium wake category.

About the Bell Helicopter UH-1 Iroquois

The Bell UH-1 Iroquois — universally known as the "Huey" from its original HU-1 designation — is the most iconic utility helicopter ever built and the defining rotorcraft of the Vietnam War era. First flown in 1956, the UH-1 became the workhorse of U.S. military operations throughout the 1960s and 70s, with its distinctive two-bladed rotor thump becoming synonymous with combat aviation. More than 16,000 Hueys were produced across military and civilian variants, making it one of the most numerous helicopters in history. The type pioneered the concept of air mobility and aeromedical evacuation, fundamentally changing battlefield tactics and saving countless lives through rapid casualty transport.

Civilian UH-1s flying today under the ICAO designator UH1 are predominantly ex-military airframes converted for utility work, firefighting, logging, and agricultural operations. These aircraft — including Bell 204, 205, 212 (twin-engine), and 412 (four-blade) variants — retain the rugged simplicity and load-carrying capability that made the Huey legendary. The single-engine models typically cruise around 110 knots with a never-exceed speed of 120 knots, powered by variants of the Lycoming T53 turboshaft producing 1,400 to 1,800 shaft horsepower. The spacious cabin can accommodate up to 14 passengers or 4,000 pounds of cargo, and the large sliding doors make it ideal for external load operations and utility missions in remote terrain.

The Huey's reputation for mechanical reliability and ease of maintenance has kept hundreds flying commercially decades after leaving military service. Operators prize the type's ability to operate from unprepared sites, its forgiving handling characteristics, and the availability of parts and expertise from a vast global support network. While newer helicopters offer better performance and lower operating costs, the UH-1 remains competitive for heavy-lift utility work where its combination of payload capacity, cabin volume, and purchase price are hard to beat. SkyMeter has tracked flights across airframes and operators, with the largest observed operator.