Lexington Park in St. Mary's County, Maryland — The American Northeast (Mid-Atlantic)
Bell TH-1L Iroquois
The "Huey" After winning the U.S. Army's 1952 competition for a light utility helicopter, the H-1 "Huey" became the West's most popular, most versatile, and longest-lived military helicopter. In 1962, the U.S. Marine Corps selected the turbine-powered H-1 to replaced their piston-engine H-34s. Shortly thereafter, the Navy also began acquiring H-1s, including the TH-1L version for intermediate helicopter training. Over the following decades, several utility and attack versions of the Huey were operated by the Marines and Navy. Although Navy H-1s, including TH-1Ls, were retired in 1983, the H-1 remains in the Marine Corps in the form of the UH-1Y Venom and AH-1Z Viper.
Our Display Aircraft PRNAM's H-1, Bureau Number 157842, was accepted by the Navy in April 1970 and served with the Navy's Air Training Command until August 1983. At that time, it was retired and transferred to the Naval Air Test Center's Rotary Wing Aircraft Test Directorate. As a ground test article, our H-1 was fitted with instrumentation to measure the unique vibration "signatures" of various intentionally induced gearbox faults. Findings from this research
this page online
Primary Mission: Training; Utility
Crew: One Instructor, One Student Pilot
U.S. Service Timeline (H-1 Series): 1964 - present
Dimensions: 52.9 fuselage length, 44.0 rotor diameter
Max. Gross Weight: 9,500 lb
Propulsion: One Lycoming T53-L turboshaft engine
Max. Operating Speed: 161 MPH (sea level)
Payload/Armament: None (up to 5 passengers in utility role)
Erected by Patuxent River Naval Air Museum.
Topics. This historical marker is listed in these topic lists: Air & Space • Military. A significant historical month for this entry is April 1970.
Location. 38° 16.566′ N, 76° 27.685′ W. Marker has been reported damaged. Marker is in Lexington Park, Maryland, in St. Mary's County. It can be reached from Three Notch Road (Maryland Route 235) just north of Buse Road, on the right when traveling north. Touch for map. Marker is at or near this postal address: 22156 Three Notch Road, Lexington Park MD 20653,
Regionally, this marker is in Southern Maryland. It is also in the American South, specifically in the Upper South, in the Mid-Atlantic, in the Tidewater, and in the Chesapeake Bay Region. Globally, it is in the North Atlantic Region, North America, the Western Hemisphere, the Western World, and the Anglosphere. Historically, it finds itself in what was once one of the original Thirteen Colonies and also the Antebellum South.
Other nearby markers. At least 8 other markers are within walking distance of this location: Boeing Vertol CH-46E Sea Knight (a few steps from this marker); Kaman SH-2G Super Seasprite (a few steps from this marker); Lockheed S-3B Viking (within shouting distance of this marker); Boeing X-32B JSF Demonstrator (within shouting distance of this marker); Grumman E-2B Hawkeye (within shouting distance of this marker); McDonnell Douglas F/A-18A Hornet (within shouting distance of this marker); North American RA-5C Vigilante (within shouting distance of this marker); Grumman NF-14D Tomcat (within shouting distance of this marker). Touch for a list and map of all markers in Lexington Park.
Another marker is no longer nearby. Sikorsky CH-53A Sea Stallion (was a few steps from this marker but has been permanently removed).
More about this marker. The marker has significant weather damage but remains readable
Credits. This page was last revised on September 1, 2019. It was originally submitted on September 1, 2019, by Devry Becker Jones of Washington, District of Columbia. This page has been viewed 413 times since then and 30 times this year. Photos: 1, 2. submitted on September 1, 2019, by Devry Becker Jones of Washington, District of Columbia.
