cheap fuel and cheap shopping; Reasons for welcoming "Iran" doctors: the entry of MD planes into the Iranian Navy begins in the early 1980s. A relatively low purchase price on the second-hand market and cheap fuel was one of the factors that welcomed the local companies. The purchase price of some MD planes ranges from one million to four million dollars, and the annual income of some of them is about 7.5 to 9 million dollars. It was also said about the annual traffic of nearly 200 thousand passengers and the occupancy factor of 85 to 90 percent of certain planes. But a high income does not necessarily mean a high profit and the cost of repairs, parts, fuel and grounding must also be calculated. Read the full text here.