"State-of-the-art" subterfuge: how Iran kept flying under sanctions

* Airlines kept flying but safety record poor

* Some parts were bought at high prices, smuggled in

* Regulators and insurers to replace middlemen

By Tim Hepher

TEHRAN, Jan 31 (Reuters) - In December 2012, aircraft trader James Kim received a letter from a company based in Cyprus offering to buy four jetliners. It was brief and to the point.

The hitherto unknown firm was "ready, willing and able" to buy four used Airbus A340 jets for which Kim was trying to broker a sale.

"I talked to them and when I got the Letter of Intent with an Iranian name, I informed them that a deal was not possible because of sanctions," Kim, managing director of British-based aircraft trading company AvCon Worldwide, told Reuters.

The company that tried to buy them, registered in a Nicosia apartment with two directors with names that sounded Iranian, vanished from the radar, Kim said in a telephone interview.

The planes, for which there is little demand, remain with their Asian owner but the suspected approach typifies a shadowy trade in airplanes and parts that spanned the globe for decades.

Suspected front firms sought to trade in spare parts and even whole aircraft, according to people involved in the trade and other experts who mostly spoke on condition of anonymity.

"The Iranians would set up companies to try to do deals and then fold them up. They didn't stay around for long," said Kim.

The methods used to evade sanctions mirror those used in other countries that are or have been under international sanctions in recent decades, such as South Africa, Cuba, Zimbabwe, Iraq and North Korea.

After the lifting of nuclear-related sanctions on Jan. 16, Iran's aviation industry is coming out of the shadows.

With an order for 118 Airbus jets witnessed in Paris by President Hassan Rouhani, Iran moved swiftly to exchange a collection of vintage jets held together with smuggled parts for a new fleet capable of taking on rival Gulf carriers.

Like Cuba's preserved 1950s automobiles, the aircraft they will replace symbolise the ingenuity wrought by sanctions but also the scale of the task needed to reconnect the economy.

"Our strategy until now has just been to survive," Iranair chairman Farhad Parvaresh said.

AIRLINE "MASTERMINDS"

At Tehran's airport, rows of mothballed aircraft still sit with bright orange covers on their engines, ready to give up their parts for other old planes needing repairs.

Through constant patching, transplants from grounded donor jets and discreet purchases, Iran's fleet stayed aloft although with an alarming safety record.

"It was state-of-the-art 'Under the Table'," Heydar Vatankhah, deputy managing director for engineering and maintenance at Iran's Kish Air, said of the overall effort.