[1] After the remaining groups of German aircraft technology engineers, those which were not yet about to be repatriated back home, had been concentrated in Sawjelowo north of Moscow in December 1953, development planning for a four jet engine-powered civilian airliner started.

Before Brandner finally went back to his family in Austria, after being forced to stay in the Soviet Union for 9 years, he selected his deputy (then Dr.-Ing.)

On 5 July 1954 the last group of 200, mainly engineers but finally also the key technical leads and minds, arrived in the Saxon town of Pirna.

While only some persons, for example Ferdinand Brandner or Günther Bock left again shortly afterwards for their final destinations in Austria and West Berlin, the majority were eager to continue with engine and aircraft development in the GDR.

In a part of the town called Sonnenstein (literally sun stone, which itself is situated on a plateau between the river valleys of Elbe in the North and Gottleuba in the West), work centered around planning of future operations / building factories and related to 152 and 014 started almost instantly.

(Other development works and factories that later formed the East German aviation industry were founded on the same date.

The project documentation that was already begun before final return of the engineers involved to Germany, was extended by a new, enlarged team now being located in Pirna and prepared for prototyping.

From the beginnings in 1954 until the completion of new factories in 1957, the premises in Pirna were basically operating as the spiritual center of aviation-related research, development & production in the GDR.

This knowledge was now serving as a foundation for the enlarged Pirna team to develop a modern, simple and robust jet engine from the already existing project documentation, which would be suitable for a civilian airliner according to specific needs regarding power requirements, simple handling, reliability, and low maintenance.

Engine control was handled by a fully automatic, compact commando unit using a proven Junkers single-handed lever action.

Therefore, fuel injectors located in the burners were given two stages, resulting in good efficiency over a large operational range.

Thus, thermal requirements for chamber wall and air pocket materials were determined to be considerable lower at first.

Integrated into a single component and inserted into the intake bullet, it worked directly on the shaft, where it was coupled with the engine-rotor using a separate transmission assembly for the starter.

Further during the re-design process, specifically from prototype engine V-07 onwards, this implementation was changed to a different, better controllable system which involved an annular blow-off belt.

Positions of electrical / pipe connections were also determined & matched after coordinations done with the people responsible for airframe construction in Klotzsche.

Those changes related to compressor blades and the blow-off system resulted in a quieter, smoother rotor behavior, as well as better pump characteristics.

After five years of research and development, in the second half of 1959 type certification was achieved after engine V-017 successfully completed a 150-hour endurance trial.

The Pirna 014 engines that were already series-produced (revisions A0 and A1) at VEB Industriewerke Ludwigsfelde (Factory 807)[4] were put to other uses, including as emergency power generators.