Press TV - The International Air Transport Association (IATA) has granted Iran Airtour Airlines, a subsidiary of national flag carrier IranAir, the IATA Operational Safety Audit (IOSA), which is an international evaluation system.

According to a statement by the Public Relations Department of Iran Airtour released on Monday, the registration of the airline's membership in the IATA has been extended until 2020 in accordance with the provisions of the IOSA Program Manual.

The IOSA Program is an internationally recognized and accepted evaluation system designed to assess the operational management and control systems of an airline.

The IOSA audit creates a standard that is comparable on a world-wide basis, enabling and maximizing the joint use of audit reports.

IOSA inspectors conduct inspections in various fields, including technical issues, flight operation, flight services, dispatch, cargo, airport services and management system.

All IATA member airlines need to complete the IOSA process and be listed on its registry.

After receiving IOSA, airlines can make use of IATA facilities in different fields.

Three Iranian airlines and 433 others across the world have so far managed to receive the IOSA certification.