The DTT or Duo Tube Transport is an early 20s era civil aviation craft. Designed by Parcois Manufactique it is an eccentric but important airframe from old times. It is slow and cumbersome as expected from an early era craft.

The odd styling/design is fairly signature of Parcois and vintage planes in general. Nevertheless, through the DTT multiple technologies were pioneered and refined. The main ducted fan influenced many future projects. The cabins are pressurized which was a first on a civil aviation plane even if it was not a new technology. Redundant controls were set up in the parallel cockpits to allow flight management from either one.

The airframe itself helped refine designs by many other manufacturers as its lift and control dynamics set the bar going forward. The service ceiling is around 33,000 feet and it will fly at that altitude nearing 300mph which was blisteringly fast at the time. Once in the air high enough and fast enough, the DTT is there to stay.

This was first discovered in testing, but demonstrated when in 1924 Harmin Kalgr attempted a highjacking of one of these during a typical flight. He tried putting the plane in a nose dive only to find that once enough speed was accrued during the descent, the crafts lifting capabilities eventually prevented it from losing anymore altitude. By the time the ordeal was over, the pilots in tube 2 took over control on their end, disabling tube 1's mechanisms. He was promptly sacked thereafter.

AG 1 running lights
AG 2 headlights
AG 3 flaps
AG 4-5 cargo tube detachers