Yakolev Yak-40.

 The Russian jet that just keeps going?

One reason for the longevity of the Yak-40 is that there is no alternative to it in Russia, compared to western types in business jets has big profits financially behind them and a demand for comfort and entertainment, if not rest and relaxation?

But the Yak-40 has held its ground as a small airline, a business jet and in the field of being an air ambulance, which is handy when dealing with long distances to be covered across Siberia, but it also has many other functions with the military and with combined-cargo operations moving smaller things to remote places!

The Yak-40 may be coming to the end of its working career, but until a new replacement is found it will soldier on in the role of being an essential air ambulance for remote places and moving essential staff to where they are needed!

Bi-Planes.

Is the day of the Bi-Plane over?

The Soviet Russian built Antonov An-2/3 still remains in active operation across the world, in it various guises. 

This 12/13 seat utility-transport is now some 75 years old and is still being found difficult to replace. Russian design teams have come up with improved engine performance, various types and payloads etc. But so far none fit the same category of the An-2 exactly. One or the other of the new designs lacks something that encompasses the original. 

Meanwhile in the rest of the world, this type of aircraft has been restricted to either sports or agricultural uses. There are also now many restored historical types flying again.

It would seem that the An-2/3 perhaps will soldier on in remote places for another 75 years?