The W.19 enlarged the W.12 to meet a requirement for greater endurance, with reconnaissance treated as the main reason for the increase. Its wingspan grew by 2.6 metres and its length by a metre. A 250-horsepower Maybach engine replaced the smaller aircraft's 160-horsepower installation, increasing power by more than half against a roughly one-third increase in maximum weight. The resulting aircraft offered about five hours of endurance and a quoted top speed of 82 knots. Its inverted tail arrangement left the observer a clear field of fire from the rear cockpit. One aircraft also tested a 20 mm Becker cannon as the navy considered heavier airborne armament.
Notable Point · 41:09-44:45
W.19 endurance, power, and the observer's field of fire
A larger airframe and a proportionally greater increase in engine power gave the W.19 five-hour endurance, while its tail arrangement protected the observer's firing arc.