Which agency would you consult to find the ownership details of a specific aircraft?

The Federal Aviation Administration (FAA) is the correct agency to consult for ownership details of a specific aircraft. The FAA maintains a comprehensive registry of all civil aviation aircraft in the United States, which includes crucial information such as the aircraft's registration number, the owner's name, and their address. This registry is publicly accessible, allowing individuals to obtain ownership records and other related details about the aircraft.

In contrast, the National Transportation Safety Board (NTSB) primarily focuses on investigating transportation accidents, including aviation mishaps, rather than maintaining records of aircraft ownership. The Department of Homeland Security (DHS) and the Transportation Security Administration (TSA) are concerned with national security and transportation security, respectively, but they do not handle aircraft registration or ownership information. Therefore, when seeking ownership details of an aircraft, the FAA is the definitive source.