As of 2010, the ban is partial and it excludes the two Tu-204's. Air Koryo can operate the two new aircraft (registration marks P-632 and P-633) normally into the European Union.
For the rest of Air Koryo's fleet there are several concerns regarding safety & security, summarized in EC Regulation No 474/2006:
(10) There is verified evidence of serious safety deficiencies on the part of Air Koryo. These deficiencies have been identified by France and Germany, during ramp inspections performed under the SAFA programme
(11) Persistent failure by Air Koryo to address deficiencies previously communicated by France was identified during other ramp inspections performed under the SAFA programme.
(12) Substantiated and serious incident-related information communicated by France indicates latent systemic safety deficiencies on the part of Air Koryo.
(13) Air Koryo demonstrated a lack of ability to address these safety deficiencies.
(14) Air Koryo did not respond adequately and timely to an enquiry by the civil aviation authority of France regarding the safety aspect of its operation showing a lack of transparency or communication, as demonstrated by the absence of reply to a request by that Member State.
(15) The corrective action plan presented by Air Koryo in response to France’s request was not adequate and sufficient to correct the identified serious safety deficiencies.
(16) The authorities of the Democratic People Republic of Korea with responsibility for regulatory oversight of Air Koryo have not exercised an adequate oversight on this carrier in accordance with their obligations under the Chicago Convention.
(17) Therefore, on the basis of the common criteria, it is assessed that Air Koryo does not meet the relevant safety standards.