R101 Despite the lack of full endurance and speed trials and the fact that a proper investigation of the aerodynamic consequences of the extension had not been fully completed by the N.P.L., a Certificate of Airworthiness was issued on 2 October, the Inspectorate expressing their complete satisfaction with the condition of the R101 and the standards to which the remedial work had been carried out. The actual certificate was handed over to H. C. Irwin, the ship's captain, only on the day of her flight to India. R101 departed from Cardington on the evening of 4 October 1930 for its intended
R101 (South Africa) the bypassing N1 Highway. At Middelfontein, right before the N1 Modimolle off-ramp, the R101 becomes the road to the west of the N1 (Mookgophong Road, later Modimolle Road) heading North-East. After Kransvlei Farm Resort, the R101 continues by way of a left turn at the t-junction to become the straight road through Mookgophong (Namboomspruit). The distance from Modimolle to Mookgophong is 42 Km. Passing through Mookgophong as Thabo Mbeki Street, it intersects with the R519 at Second Avenue and the R520 at Nelson Mandela Drive. While mostly parallel to the N1, it journeys 51 Km North-East to Mokopane (Potgietersrus). 7