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Bf-109E-4 (ALT)

Beginning the battle of Britain, the BF-109E-3 was replaced by the BF-109E-4, which was different in some small details, most notably by using the modified 20 mm MG-FF/M wing cannon and having improved head armour for the pilot. The cockpit canopy was also revised to an easier-to-produce, "squared-off" design, which also helped improve the pilot's field of view. This canopy, which was also retrofitted to many E-1s and E-3s, was largely unchanged until the introduction of a welded, heavy-framed canopy on the G series in the autumn of 1942. The E-4 would be the basis for all further Bf 109E developments. Some E-4 and later models received a further improved 1,175 PS (1,159 hp, 864 kW) DB601N high-altitude engine; known as the E-4/N; owing to priority being given to equipping Bf 110s with this engine, one fighter gruppe was converted to this version, starting in July 1940.[21] The E-4 was also available as a fighter-bomber with equipment very similar to the previous E-1/B. It was known as E-4/B (DB 601Aa engine) and E-4/BN (DB 601N engine). A total of 561 of all E-4 versions were built,[13] including 496 E-4s built as such: 250 E-4, 211 E-4/B, 15 E-4/N and 20 E-4/BN

Difficulty - Medium Speed - Fast Turn Rate - Medium Notes: AIRCRAFT ENTERS FLATSPINS WHEN (PITCHING UPWARDS,) RUDDER + AILERONS ARE PRESSED IN THE SAME DIRECTION, THEN PUSHED IN THE OPPOSITE DIRECTION, BEWARE