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Udet U-12 Flamingo

The Udet U 12 Flamingo was an aerobatic sports plane and trainer aircraft developed in Germany in the mid-1920s.

The U 12 was a conventional, single-bay biplane of wooden construction with the wings braced by large I-struts.

The pilot and instructor or passenger sat in tandem, open cockpits.

The U 12 proved extremely popular and sold well, due in no small part to Ernst Udet’s spectacular aerobatics routines while flying the aircraft. One particularly acclaimed part of his act included swooping down towards the airfield and picking up a handkerchief with the tip of one wing. 

The popularity of this aircraft was insufficient to rescue Udet Flugzeugbau from its dire financial position, but when the company’s assets were taken over by the state of Bavaria to form BFW, production of the U 12 soon resumed in earnest.

BFW-built U 12s were exported to Austria, Hungary and Latvia, and later built under licence in these countries as well.



U 12a

Main production version with Siemens-Halske Sh 11 engine

U 12W

Float-equipped U 12a

U 12b

Version strengthened for aerobatics and with improved wing design

U 12c

Advanced trainer with reduced wing area

U 12d

U 12b with Siemens-Halske Sh 12 engine

U 12e

U 12c with Siemens-Halske Sh 12 engine


20 aircraft produced by Fliegerwerft Thalerhof

U 12H

Standard U 12a 

U 12S

U 12a with redesigned fuselage of fabric-covered steel tube construction.

U 12Ö

Alternative designation for U 12S 


Forty aircraft produced by KRG and another 40 by Manfred Weiss Works.

Some examples armed and used for fighter or bomber training

Hungária I

Similar to U 12a with N-type interplane struts

Hungária II

Similar to U 12a with N-type interplane struts

Hungária III

Similar to U 12a with N-type interplane struts, propeller spinner and Townend ring

Hungária IV

Similar to U 12a. Only Hungarian-built version with I-type interplane struts

Hungária V

Similar to U 12a with N-type interplane struts





7.4 m (24 ft 6 in)


10.0 m (32 ft 8 in)


2.8 m (9 ft 2 in)

Wing area

24 m2 (258 sq ft)

Empty weight

525 kg (1,157 lb)

Gross weight

800 kg (1,764 lb)


1 × Siemens-Halske Sh 11,

60 kW (80 hp)


Maximum speed

140 km/h (87 mph, 76 kn)


450 km (280 mi, 240 nmi)

Service ceiling

3,700 m (12,100 ft)

Rate of climb

2.3 m/s (450 ft/min).



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