In order to trace the roots of the P-63, one must examine its direct predecessor, the Bell P-39 Airacobra. The Airacobra had been intended to be a high-altitude interceptor, complete with an M4 ...

Summary: The P-39 Airacobra, often regarded as the least loved American fighter of World War II, was criticized for its inadequate performance compared to the P-51 Mustang and P-47 Thunderbolt.