12/31/2013. Remarks by Johan Visschedijk: "The P-39N was the first Airacobra model to be produced on a really large-scale. In all, 2,095 examples of this version were constructed, all powered by the 1,325 hp Allison V-1710-85 twelve-cylinder liquid-cooled V-engine with an Aeroproducts airscrew. At the request of the USAAF, after the completion of 166 P-39N-0-BE Airacobras, four fuel cells were removed to reduce the internal fuel capacity from 120 to 87 gal (454 to 329 l), and so reduce the maximum permissible gross weight from 9,100 lb to 8,750 lb (4,128 to 3,969 kg).

Some 500 P-39N-0s were followed by 900 P-39N-1s with minor internal changes, and 695 P-39N-5s in which the total weight of armor was reduced from 231 to 193 lb (105 to 88 kg), a curved armor head plate supplanting the bulletproof glass behind the pilot.

By the time this photo was taken, the US Army Air Corps was renamed US Army Air Forces (June 20, 1941), and the 118th Observation Squadron of the Connecticut National Guard had been called for federal service in February 1941, and in August 1943 it was renamed the 118th Tactical Reconnaissance Squadron (TRS)."

Read the 118th TRS remarks on page 12178.