212, for a Cat A aircraft, Part 29 does not require a simultaneous dual engine cut. It does require single engine cuts from dual engine flight and requires cutting the second engine from whatever speed the applicant selects for the OEI maximum speed ( usually OEI VH ). Part 29 also requires testing to whatever the applicant selects for the Vmax autorotation speed. That can have its own set of things to watch out for. After one reads all the testing required in that sub part G of the advisory circular and then comparing to the limited info in the referenced article, there is no certainty of exactly what the initial conditions were.