Hi, does anybody know the dates/years these aircraft went into
service and other facts about them?

Tupolev TB-5
Univ Leningrad Leningradec
Suchoi Su-1
Tupolev ANT-23 = I-12

Please visit my homepage, maybe you can help me with my research, or
you find something interesting for you: I have lots of links to
anything concerning ships, aircraft, airships as well as pics, book
reviews, a dictionary and other little helpers.
If I can help you somehow, let me know!!

Have you already visited my FlugzeugFiles with data on every aircraft
I know?

Any idea whom to ask (person, mailing list, museum, ...) ?

If you have a spam-problem, I´m willing to act as a moderator.

Thank you very much in advance!!
http://picpage7.tripod.com/flagship.html