On 5th February, the US Bureau of Industry and Security (BIS) reported that it has acted against Turkish national Gulnihal Yegane and 3 affiliated Turkish companies who are involved in illicitly procuring and supplying Iranian airlines with US-origin aircraft engines and spare parts. The action, called a “temporary denial order” (TDO), suspends the export privileges of Gulnihal Yegane (“Yegane”), Trigron Lojistik Kargo Limited Sirketi (“Trigron”), Ufuk Avia Lojistik Limited Sirketi (“Ufuk Avia”), and RA Havacilik Lojistik Ve Tasimacilik Ticaret Limited Sirketi (“RA Havacilik”). Gulnihal Yegane was previously added to the BIS Entity List for smuggling parts to Iran’s Mahan Air.
Temporary Denial Orders are issued by the Assistant Secretary for Export Enforcement of the Bureau of Industry and Security, denying the export privileges of a company or individual to prevent an imminent or on-going export control violation. These orders are issued for a renewable 180-day period and cut off not only the right to export from the US, but also the right to receive or participate in exports from the US.
https://www.bis.doc.gov/index.php/forms-documents?task=doc_download&gid=2190