COVID-19 Contingency Related Differences (CCRD)

With reference to State Letter AN 11/55-20/50, a CCRD sub-system has been created in the existing Electronic Filing of Differences (EFOD) system to capture any differences from ICAO Standards on certification and licensing that may arise from mitigation measures due to the COVID-19 pandemic. It is accessible via the USOAP dashboard.

States can notify their temporary differences:

         a)  via the CCRD sub-system accessible through the EFODs dashboard; or

        b)  by sending an off-line CCRD form available on the ICAO COVID-19 Operational Safety Measures public website by email to

There is no restriction on who can fill out the off-line form. However, it may only be submitted by the National Continuous Monitoring Coordinator (NCMC) or an authorized user from a Member State, who are responsible for ensuring the accuracy of the information provided.

CLICK HERE to download the Form, including instructions for completion.



ICAO has been made aware of two types of alleviations being conducted by Member States. While many of these alleviations fall under what is permissible by the relevant Standards, others do not.

Alleviations that are permissible by the relevant Standards are those where the Standard has a statement such as "… established by that State". In accordance with guidance in the Safety Oversight Manual (Doc 9734) any exemption or exception should only be granted based on a safety risk analysis with a robust rationale and they should be temporary in nature.

Alleviations that are not permissible by the relevant Standards are those that have a specific requirement. For example, medical certificates. The Standard specifies that the period of validity of a medical assessment may be extended, at the discretion of the Licensing Authority, up to 45 days. Any extension beyond 45 days does not meet the minimum requirements of Annex 1 – Personnel Licensing, and therefore Member States have no obligation under Article 33 of the Convention to recognize them as valid.

To participate in international navigation with a medical certificate that does not meet the minimum Standards, in accordance with Article 39 of the Convention, the medical certificate would need to be accompanied by a complete enumeration of the particulars in which it does not satisfy the provisions. In this case, the particulars would need to address the specific differences related to the validity period of the certificate. Furthermore, in accordance with Article 40 of the Convention, no personnel having such a certificate would be able to participate in international navigation, except with the permission of the State or States whose territory is entered.

The CCRD sub-system of the EFOD system will allow States to file a temporary difference and at the same time indicate what they would find acceptable to facilitate international operations and meeting the obligations under Article 40 for specific Standards.

The CCRD only contains Standards that are related to some mitigation measures taken by some States. This initial list may be expanded as other provisions are identified. It should be noted that, to date, ICAO has not been made aware of any alleviations from requirements related to airworthiness certificates.



The information is accessible via the USOAP dashboard. In addition, the information received will be published in 2 regularly updated reports: 

1. Report providing information grouped by States and territories  CLICK HERE

2. Report providing information grouped by Standard CLICK HERE

3. A CCRD graphical interface has been kindly developed by IATA and available HERE

These reports were last updated on 5 June 2020.

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