Within the german armed forces (Bundeswehr) - this institution bears for the german armed forces the responsibility, that only trustworthy and capable flying material gets into operation. This office is also responsible for the qualification and checkout of all technical changes on already operational flying systems. The agency has its home on the airfield Ingolstadt-Manching which is part of it and which is shared with EADS, the European Aeronautic Defence and Space Company. WTD 61 performs all kinds of test operations. For these test programs special test airplanes are used which carry sophisticated test and sensoric equipment that is capable to sense hundreds of values, store them and transmit them to the test center on the ground. For this task the agency owes a considerable number of transport and jet aircraft and helicopters, which serve as flying test platforms.