Boeing (BOE, Washington National) has yet to sell Iran any aircraft spares despite the recent signing of a Memorandum of Understanding to do so. According to Iran's IRIB news agency, Iranian MP, Jalil Sar Ghale, told a Tehran parliamentary inquest that the US manufacturer's quoted prices were three times those of current market prices leading the Iranian Civil Aviation Organization (IrCAO) to reject the offer.

Should Boeing fail to reconsider its prices, Ghale said, Iran would resume using the international black market where it is able to source most of its spares requirements, despite sanctions.

As its stands, Boeing has so far only supplied IranAir (IR, Tehran Mehrabad) with flight security documents and manuals.

With the signing of an interim deal between Iran and the Group 5+1 (the US, Russia, China, France and Britain plus Germany) in Geneva in November 2013, IrCAO Director General, Alireza Jahangirian, said USD1billion had been budgeted for the purchase of new aircraft and spare parts to help improve Iran's accident-prone domestic aviation scene.