Norwegian Air DY1933 Iran diversion


On December 14, 2018, a regularly scheduled Norwegian Air Shuttle flight using the Boeing 737 MAX 8 from Dubai to Oslo suffered low oil pressure in one of its two CFM Leap engines. The plane landed in Shiraz, Iran with that engine shut down. Since US goods, especially aircraft and parts, are not allowed to be imported to Iran, the plane was stranded there. The plane left Iran on 22 February 2019, ten weeks after it landed there.
As passengers and crew didn't have Visas to enter Iran, they were sequestered in a hotel overnight, then returned to the airport, leaving on a 737-800. That 737-800 had to divert to Warsaw, having higher-than-expected fuel burn, either from headwinds or unplanned additional weight.
Since President Trump withdrew from the nuclear agreement with Iran and placed them under sanctions a month prior, the repair parts for the CFM leap engine could not be imported. Further, the Treasury Department's Office of Foreign Assets Control, which would grant exceptions to the sanction, was shut down from December 22, 2018 until January 25, 2019.
The plane, LN-BKE, was only six weeks old when the incident occurred.