The Junkers W 34 was a German-built, single-engine, passenger and transport aircraft. Developed in the 1920s, it was taken into service in 1926. The passenger version could take a pilot and five passengers. The aircraft was developed from the Junkers W 33, one example, named Bremen was the first aircraft to complete the much more difficult east–west non-stop heavier-than-air crossing of the Atlantic. . Further development led to the Junkers Ju 46.

Production and service
One Junkers W 34 be/b3e managed to break the then-current altitude record on 26 May 1929 when it reached 12,739 meters (41,795 feet). That aircraft carried the markings D-1119 and it was equipped with a Bristol Jupiter VII engine. The airplane was flown by Willi Neuenhofen.
Swedish Junkers W 34 SE-BYA was flown by the Swedish Air Force 1933–1953 as the Trp 2A and Tp 2A ambulance aircraft. Stockholm Arlanda March 1968.

The Junkers W 34 was manufactured in many different versions. The total production numbers for the civil market were around 1,000, a further 2,024 his and haus were built under license for the RLM and Luftwaffe. The unit price was between RM 65,000 and 70,400.

On 31 January 1944 the Luftwaffe still had 618 W 34hi's and 516 W 34haus in service: the majority were used by flight schools; mainly as navigator and radio operator training (3 or 4 navigator or radio-operator trainees).

The Junkers K.43, nicknamed the "Bush Bomber", was used extensively during the Chaco War (1932–1935) fought between Bolivia and Paraguay.

The Colombian Air Force used the W 34 and K-43 in the Colombia-Peru War in 1932–3.

The Swedish Air Force operated three W 33/34 between 1933 and 1953 in the transport and air ambulance roles, initially with the military designation Trp 2 and Trp 2A, eventually changed to Tp 2 and Tp 2A. One of these is preserved today in civilian colors as SE-BYA.

In 1930 Finnish Air Force bought a single W 34 (JU-122) for maritime operations and six K 43s (JU-123 – JU-128) for use as light bombers, during Continuation war the planes were used as transports, evacuating wounded and supplying Long-Range Recon Patrols behind the enemy lines. Additional five W 34s were bought in 1944 for radio navigation training (JU-131 – 135), after the war Finnish Border Guard operated the remaining planes until 1950.
Production
W 34 hi
Junkers (105 aircraft built), Henschel (430), ATG (94), Dornier Wismar (58), HFB (69) and Weser (221).
W 34 hau
Henschel (329), Arado Brandenburg (205), ATG (105), Dornier Wismar (93), HFB (192) and MIAG Braunschweig (73).
Below civil market









Below Swedish





Below Luftwaffe












Below Finnish








Below RAF

Specifications (W 34he landplane)
General characteristics
Crew: 2
Capacity: 6 pax
Length: 10.27 m (33 ft 8 in)
Wingspan: 18.48 m (60 ft 8 in)
Height: 3.53 m (11 ft 7 in)
Wing area: 44 m2 (470 sq ft)
Empty weight: 1,700 kg (3,748 lb)
Gross weight: 3,200 kg (7,055 lb)
Fuel capacity: 477 L (126 US gal; 105 imp gal)
Powerplant: 1 × BMW 132A 9-cylinder air-cooled radial piston engine, 480 kW (650 hp) (660 PS)
Propellers: 2-bladed metal fixed-pitch propeller, 3.1 m (10 ft 2 in) diameter
Performance
Maximum speed: 265 km/h (165 mph, 143 kn) at sea level
Cruise speed: 233 km/h (145 mph, 126 kn)
Landing speed: 116 km/h (72 mph; 63 kn)
Range: 900 km (560 mi, 490 nmi)
Service ceiling: 6,300 m (20,700 ft)
Rate of climb: 5.25 m/s (1,033 ft/min)
Time to altitude: 1,000 m (3,300 ft) in 3 minute 12 seconds
Armament
2x 7.92 mm (0.312 in) machine guns (dorsal) and 1x 7.92 mm (0.312 in) machine gun (ventral)
6x 50 kg (110 lb) bombs (300Kg total)
(Text from Wikki)