the Bede Aircraft Company, the BD-5 entered a sort of limbo while builders completed their kits. The early safety problems and the challenge of adapting a suitable engine exacerbated delays. Over the next few years, however, solutions to most of these problems arrived in one form or another. Many other changes have also been incorporated to improve the original design. The problem of finding a suitable engine with yet weighing under was a serious problem in the 1970s, but today there are a number of off-the-shelf designs in this class. The widely available Rotax 582 is a engine weighing in standard configuration, almost tailor-made for the BD-5. Other engines successfully used in BD-5s include the Subaru EA-81, Honda EB1 & EB2 (with and without turbocharging), Hirth 2706, AMW 225-3 and 2SI 808. A BD-5A fitted with a Rotax 618UL two-stroke two-cylinder, water-cooled engine holds the current FAI C-1a/0 class speed record (aircraft weighing under ) at . Problems with the abrupt stall were mostly addressed by Harry Riblett, an airfoil designer who documented a procedure to apply a slight reprofile of the wing root airfoil, which softened the stall response of the aircraft without any significant performance degradation. The reprofile presents other unique problems, associated with the way it is applied to the wing upper surface, essentially glueing foam to the aluminum skin and covering with fiberglass. Similarly, the small center-of-gravity range has since been addressed with stretch kits for the fuselage. Several companies were formed to help builders complete their kits, and many of the aftermarket modifications were worked into these services. , BD-Micro Technologies of Siletz, Oregon continues to offer kit building support, including new-build kits featuring (optionally) all of these modifications and powered by a Rotax 582 or Hirth 2706 two-stroke engine, and even the BD-5T, a turboprop version using a Microturbo TRS 18 turbine powering a mechanically controlled variable-pitch propeller. Alturair, Inc. of San Diego, California also offers extensive parts and construction assistance services, as well as kits for the BD-5B and BD-5G models. Bede Aircraft Company has since re-formed and has been working on several new designs. Before his death in 2015, Bede hinted at a two-seat tandem version of the aircraft, called the "Super BD-5", using a certified aircraft engine and a number of modifications and improvements, but nothing more than a preliminary design drawing was made available. BD-5J jet While the new Hirth