Czech Aero Aircraft Designations

[hesham]

L-290 was a low-wing 6-8 seat business jet aircraft project of late 1990,
powered by two DV-2 engines,mounted besid the rear of the fuselage and
had a T-tail

From my dear Sarastro, I just add this

https://www.secretprojects.co.uk/threads/czech-aero-aircraft-and-projects.2844/page-2#post-426878

 

[hesham]

Ae.48 may be airliner project

That aircarft project was based on Siebel design,could be Si.204D.