the Johannesburg City Council for £106,498, with of land not used resold to the former and land provided for a future highway to connect to the Heidelberg road. The final transfer took place in 1944. In early 1939, the Union Defence Force took control of Rand Airport and by May 1940, all commercial flights ended. The training schools based there trained pilots for the war effort and the facilities were extended with fifteen additional hangars built. By 1944, a limited number of internal commercial flights resumed from the airport. After World War II SAA moved its headquarters to Palmietfontein Airport in 1948 because of runway length constraints. Nevertheless, Rand Airport grew quickly after World War II ended because of the influx of former air force pilots. In 1975, with 133135 recorded aircraft movements, Rand Airport was the busiest airport in the southern hemisphere. The ownership of the airport originally consisted of 23 private shareholders and there has been very little change. Most of the re-sales have been taken up by existing owners under new company names so there has been a small increase to the current 25 owners, plus the Mayondi BEE consortium and Ekurhuleni Metropolitan Council. Rand Airport today Today, the airport hosts air charter operators, flying schools and a number of aircraft maintenance organisations, as well other aviation-related enterprises. Charter operator Phoebus Apollo Aviation has its headquarters at Rand; the airport is also home to the Flying Lions Aerobatic Team. South African Airways donated a Boeing 747-200 and a Boeing 747SP to the South African Airways Museum Society which are on display at the airport. The museum also owns a Boeing 737-200, two DC-4s, a DC-3, Vickers Viking, Lockheed Lodestar, Lockheed L1649 Starliner, DH Dove and numerous other exhibits. The airport also hosts an annual air show. Airlines and destinations Today, all scheduled flights operate at the nearby O. R. Tambo International Airport. Hot and high conditions Rand Airport is notorious for its hot and high conditions and relatively short runways. Situated at an altitude of above sea level, the density altitude is as high as when the outside air temperature (OAT) is 30 °C. Special consideration must be given to flight planning in the summer when the ambient temperature is that high; there have been many accidents at this airfield as a result of reduced aircraft performance under these extreme conditions. A compounding factor is the lack