R101 would generate favourable publicity for the airship programme. The final trial flight of R101 was originally scheduled for 26 September 1930, but high winds delayed the move from the shed until 1 October. That evening, R101 slipped the mast for its only trial flight before setting off for India. This lasted 16 hours 51 minutes and was undertaken under near-ideal weather conditions; because of the failure of the oil cooler in one engine, it was not possible to carry out full speed trials. The flight was curtailed because of the need to prepare the airship for the flight to India.
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