apartamenty gdańsk You be aware of Russians appear to have designed a version of just about every major aerospace design the US has ever think of, including their version of our own Space Shuttle, B-1, etc. The undercarriage serves no function by any means during flight, so that it has to be as smaller than average and light as possible.
The naturally aged version was protected by Air Ministry Specification DTD 18 issued in 1924, while artificially aged duralumin received Specification DTD 111 in 1929. That way you may get settled and ensure that the infant is comfortable, rather then standing in a very long line waiting to get seated having a crying baby.