These two aircraft were replaced by the Do 228 at the end of 1995.
The aircraft were rather quickly replaced in 1940 by J 9.
It is intended to replace older aircraft in a similar size range.
This may cause issues in the future as some aircraft, such as the A-10, are out of production and cannot be replaced.
If the economy slows, he said, the planes will be used mostly to replace older aircraft.
These aircraft will be replaced by the Boeing 787-8.
By the end of the 1990s, three aircraft had crashed but were replaced with three others.
About half these will be replaced by quieter Stage 3 aircraft by the end of the 1990's he said.
In one version, the aircraft has been replaced with a Melbourne tram.
These were used for only a short time before being replaced by Yak-11s and Yak-18s Soviet aircraft in late 1952.