Nice to know there is an interest in the F-28
Ther were 3000 and 4000 varients as well, also a rare 5000 which did not go into production.
Somewhere I may have the hard copies, or might have access.
I did 22 years and 10,000 in that type.
Currently in Moscow Port at the end of a Russian River cruise, be back in the warm in a week or so
Cheers
