Grass Land Air Field

The specific reason for closure is not officially documented. However, as a small, privately owned turf airfield, the closure was likely due to economic factors, such as rising operating costs, liability insurance increases, or the owner's retirement or sale of the property. This was a common fate for many small general aviation airports in the United States during that era. There is no evidence of a major accident or military conversion leading to its closure.

The site is no longer an active airport and is privately owned. Satellite imagery of the coordinates shows that the faint outline of the former north/south grass runway is still visible. The land appears to be maintained as an open field or part of a larger private estate or farm. Some original buildings, which may have been hangars or barns, are still standing at the south end of the former runway area. The property has not been redeveloped for commercial or dense residential use.

Grass Land Air Field, also known as Canaan Airport, was a private general aviation airfield operational from at least the early 1960s. The identifier US-11204 is a non-standard code, likely from a third-party database, as official ICAO codes are four letters. A 1962 airport directory listed it with a single 2,100-foot turf runway, with the operator noted as E. J. Mauk. For over two decades, it served as a landing spot for light, single-engine aircraft used for recreational flying and personal transport in the Litchfield Hills region of Connecticut. Its presence on aeronautical charts made it a known landmark for pilots navigating the area.

There are no known plans or prospects for reopening Grass Land Air Field. Given that it has been closed for approximately four decades and the land is privately held, the likelihood of it being reactivated as an airport is extremely low due to significant regulatory, financial, and logistical challenges.