Air Koryo (JS, Pyongyang) has been sanctioned by the East China Regional Administration of the Civil Aviation Administration of China (CAAC) after one of its Tu-204s, P-632 (cn 1450742364012), was forced to make an emergency landing in Shenyang last month.

The twinjet was en-route from Pyongyang to Beijing Capital when the crew reported smoke in the cabin and requested to divert to Shenyang where it made a safe landing. No injuries or casualties occurred.

Following an investigation, CAAC said in a statement issued Wednesday that the smoke had emanated from an attendant call-button located between rows 20 and 27 on the aircraft.

The CAAC has since issued recommendations to Air Koryo to improve its flight crews' emergency response procedures and to improve training in how to deal with scenarios involving TCAS alerts, tire bursts and other emergencies. The North Korean carrier must also improve its aircraft MRO regime, it said.

The regulator ended by stating that it would take the "appropriate measures" to limit Air Koryo's operations.