Douglas DC-3 Dakota (civilian version of the Douglas C-47 Skytrain military aircraft).
It was a United States Army Air Force (USAAF) aircraft that, in July 1944, made an emergency landing near Sagres due to bad weather/navigation problems.
The crew was repatriated and the aircraft was integrated into the Portuguese Military Aeronautics with registration D-2.
In 1945, it was converted for civilian use and delivered to the newly created TAP, receiving the historic registration CS-TDA.
After about 13 years of service with TAP, it was transferred to the DETA airline in Mozambique (with the name "Gorongosa" and registration CR-AGB), later returning to the Portuguese Air Force (FAP).
The Douglas DC-3 currently preserved and painted in the original TAP colors and registration CS-TDA (taken to the Air Museum in Sintra in 2012) actually corresponds to another historic ex-DGAC fuselage (with the original registration CS-DGA) restored with this tribute.