This aircraft paper model is a Grumman US-2N Tracker, the first purpose-built, single airframe anti-submarine warfare (ASW) aircraft, the paper model was created by Gahm. The scale of the papercraft is in 1:50. KLM - Royal Dutch Airlines operated S-2 Tracker (G-89/G-121/S2F) - ex-Dutch Navy Tracker was used by KLM to train their mechanics.
The Tracker was of conventional design with twin engines, a high wing and tricycle undercarriage. The type was exported to a number of navies around the world. Introduced in 1952 the Tracker saw service in the USN until the mid-1970s with a few aircraft remaining in service with other air arms into the 21st century. The last operating fleet is maintained by Argentina and Brazil.
You can downoad the paper craft here: Grumman US-2N Tracker Free Aircraft Paper Model Download