Friends, would it be feasible to proceed with an adaptation from the existing Mod He-111 A.B.E? It would be a great device for secret pilot training for bombers ...
(google transl)
Early civilian variants
He 111C
The first prototype, He 111 V1 (W.Nr. 713, D-ADAP), flew from Rostock-Marienehe on 24 February 1935. It was followed by the civilian-equipped V2 and V4 in May 1935. The V2 (W.Nr. 715, D-ALIX) used the bomb bay as a four-seat "smoking compartment", with another six seats behind it in the rear fuselage. V2 entered service with Deutsche Luft Hansa in 1936, along with six other newly built versions known as the He 111C. The He 111 V4 was unveiled to the foreign press on 10 January 1936. Nazi propaganda inflated the performance of the He 111C, announcing its maximum speed as 400 km/h (249 mph); in reality its performance stood at 360 km/h (224 mph).[19] The He 111 C-0 was a commercial version and took the form of the V4 prototype design. The first machine was designated D-AHAO "Dresden". It was powered by the BMW VI engine and could manage a range (depending on the fuel capacity) of 1,000 km (621 mi) to 2,200 km (1,367 mi)[19] and a maximum speed of 310 km/h (193 mph).[20] The wing span on the C series was 22.6 m (74 ft 1¾in).[20] The fuselage dimensions were 17.1 m (56 ft 1¾in) in the He 111 V1, but changed in the C to 17.5 m (57 ft 5 in). The Jumo 205 diesel powerplant replaced the BMW VI. Nevertheless, the maximum speed remained in the 220–240 km/h (137–149 mph) bracket. This was increased slightly when the BMW 132 engines were introduced.
A general problem existed in powerplants. The He 111 was equipped with BMW VI glycol-cooled engines. The German aviation industry lacked powerplants that could produce more than 600 hp. Engines of suitable quality were kept for military use, frustrating German airline Luft Hansa and forcing it to rely on the BMW VI or 132s.