Issue 1

Issued: 02 November 2020

Reviewed: 25 October 2023

Effective: on issue


Overseas Territories Aviation Circulars are issued to provide advice, guidance and information on standards, practices and procedures necessary to support Overseas Territory Aviation Requirements.  They are not in themselves law but may amplify a provision of the Air Navigation (Overseas Territories) Order or provide practical guidance on meeting a requirement contained in the Overseas Territories Aviation Requirements.


This Overseas Territories Aviation Circular provides information regarding Extended Diversion Time Operations (EDTO) and the requirements of both the AN(OT)O and OTAR Parts 39, 121 and 135 for obtaining an EDTO approval.  This guidance is also intended to provide an indication of the level of knowledge and investment in resources (both human and hardware) necessary, before an operator is ready to commence the process of applying for EDTO approval.


This Circular relates to OTAR Part 39 Subpart C, OTAR 121.275 and OTAR 135.275.


First issue.


Enquiries regarding the content of this Circular should be addressed to Air Safety Support International at the address on the ASSI website or to the appropriate Overseas Territory Aviation Authority.