Suspected Unapproved Parts Distributed by AOG Technics Limited - Civil Aviation Safety Alert (CASA) No. 2023-05


Owners, Operators, Maintainers and Distributors.

File Classification No.: Z 5000-35
RDIMS No.: 19847710
Document No.: CASA 2023-05
Issue No.: 01
Effective Date: 2023-10-19


The purpose of this CASA is to inform aircraft owners, operators, maintainers and distributors of suspected unapproved parts distributed by AOG Technics Limited, as described in the United Kingdom (UK) Civil Aviation Authority (CAA) Safety Notice SN-2023/004.


On August 4th, 2023, the UK CAA published the Safety Notice to alert aircraft owners, operators, distributors and maintainers of suspected unapproved parts distributed through a UK based company, AOG Technics Limited, Nova North, 11 Bressenden Place, London, SW1E 5BY.

The Safety Notice says that it has been shown that the company supplied false Authorized Release Certificates (ARCs) (both European Aviation Safety Agency (EASA) Form 1 and Federal Aviation Administration (FAA) 8130-3) with distributed engine parts, including CFM and GE engine parts.

EASA and the FAA have also issued notifications:

Recommended Action:

Aircraft owners, operators, maintainers and distributors are encouraged to accomplish a thorough review of their records and parts inventories for any part traceable to the UK based company AOG Technics Limited.

If parts are found, the ARC that came with the affected part, such as an EASA Form 1 or an FAA 8130-3, should be verified to determine whether or not the certification has been falsified.

Confirmation from the approved organization identified on the ARC may be required to ensure that they did in fact manufacture or maintain the part in question and that the person who certified the part was authorized by the approved organisation.

If it is determined that an ARC has been falsified on a part that has been installed on an aeronautical product, the affected part should be replaced with an approved part. Affected parts found in inventory should not be sold, distributed or installed on an aeronautical product and should be quarantined as unairworthy parts until a determination can be made regarding their eligibility for installation.

Any person who believes a part was not manufactured or certified in accordance with the applicable regulations of the state of production, or is improperly marked, or is documented in such a manner as to mislead, is encouraged to submit to Transport Canada a report of the suspected unapproved part via the Web Service Difficulty Reporting System (WSDRS) at:

Contact Office:

For more information concerning this issue, contact a Transport Canada Centre or contact Jeff Phipps, Chief Operational Airworthiness, Standards Branch in Ottawa, by email at

Original signed by
Andrew Larsen

Stacey Mason


The Transport Canada Civil Aviation Safety Alert (CASA) is used to convey important safety information and contains recommended action items. The CASA strives to assist the aviation industry's efforts to provide a service with the highest possible degree of safety. The information contained herein is often critical and must be conveyed to the appropriate office in a timely manner. The CASA may be changed or amended should new information become available.