the story of Tu-144: the french were developing the Concorde and the Soviets wanted to beat them first so they were spying them. Once the french knew, they started to feed the Russians with false information. This led to the development of Tupolev. There were major flaws added to the design. The Russians didn't see anything and flew the plane, which crashed on its first inaugural flight. The French went on and delivered the most beautiful super sonic commercial plane ever.

Airplanes from Mods:

Boeing F3B 250 m (from 1928)
Boeing 247 300 m (from 1933)
Me.323 360 m (from 1942)
JU 52 360 m (from 1932)
Fo27 480 m (from 1955)
C-123 480 m (from 1955)
DC3 480 m (from 1964)
Boeing 377 580 m (from 1949)
L-188 Electra 580 m (from 1957)
Tu 104 680 m (from 1956)
DC-9-10 700 m (from 1965)
C-130 777 m (from 1964)
MIG15 800 m (from 1949)
MIG21 830 m (from 1959)
DC-9-30 830 m (from 1967)
DC-9-50 830 m (from 1974)
Tu 154 870 m (from 1969)
C-17A 870 m (from 1991)
AN-24 1000 m (from 1959)
AN-22 1000 m (from 1965)
B-17 1021 m (from 1935
B-29 Silver 1050 m (from 1944)
B-29 Superf. 1100 m (from 1944)