ICAO’s Aviation English Language Test Service (AELTS) General Disclaimer

The purpose of this service is solely to confirm whether a given test of aviation English is consistent with the testing methodologies derived from established criteria pursuant to the applicable ICAO Standards and Recommended Practices. The service does not review tests of general English proficiency.

This test service is offered “as is”, without warranty of any kind, either express or implied. ICAO specifically does not make any warranties or representations as to the accuracy or completeness of this service. ICAO periodically adds, changes, improves or updates the assessment process without notice. Under no circumstances shall ICAO be liable for any loss, damage, liability or expense incurred or suffered that is claimed to have resulted from using this service, including, without limitation, any fault, error, omission, interruption or delay with respect thereto. Under no circumstances, including but not limited to negligence, shall ICAO be liable for any direct, indirect, incidental, special or consequential damages, even if ICAO has been advised of the possibility of such damages.

The Test Service Provider and the relevant government entity having jurisdiction to oversee its operations expressly acknowledge that any recognition through this service shall not be construed to attest to the qualifications or persons tested, and expressly agree to indemnify, hold-harmless, save and defend, at their sole expense, ICAO, its officials, agents and employees from and against all claims, demands, suits, losses and liability of any kind arising from or having a relation to ICAO’s Test Endorsement Service.

ICAO further makes no guarantee that a test submitted for assessment will be determined to be in conformance with ICAO Standards and Recommended Practices (SARPs) as outlined in the ICAO Manual on the Implementation of ICAO Language Proficiency Requirements (Doc 9835). Decisions depend entirely on the quality of the test and its documentation. While ICAO will endeavour to provide guidance for test improvement, it remains the responsibility of test owners to take any action necessary to ensure a test meets the criteria as outlined in ICAO Doc 9835.

Test owners remain responsible for ensuring they have all that is needed to prepare for and submit a test for assessment and for providing that information to ICAO as needed on a timely basis. ICAO will not be responsible for incorrect or incomplete information submitted about a test.

ICAO reserves the right to withdraw its recognition of any institution failing to meet established standards for test administration and improvement over time.

Compliance with licensing requirements in relation to English language proficiency remains the sole responsibility of the aeronautical authorities of the State concerned.

Service Fees

Submitting a test for assessment is conditional upon paying all applicable fees, as defined on this website and in ICAO policies. Fees must be paid in full prior to submitting a test for assessment. Fees are non-refundable and therefore not dependent on the result of a test assessment. Test owners whose tests do not meet the criteria as outlined in ICAO Doc 9835 are not eligible for a refund, in part or in whole, of the fees paid.

The AELTS Website

The information contained on this website is for general use and may change without notice, from time to time and as needed to stay current. The information included in downloadable files (such as the test policy) takes precedence over what appears on website pages, and will be used by ICAO to answer questions or address concerns. All questions about the test service that are not addressed here should be clarified directly with ICAO to confirm understanding of the process and its related conditions.

Every effort is made to keep the website up and running smoothly. However, ICAO takes no responsibility for, and will not be liable for, the website being unavailable due to technical issues beyond our control or otherwise.


ICAO reserves the right to revise and amend this disclaimer notice from time to time, and any revised version will be deemed to be applicable from the first date of publication on this website.