Supplemental Type Certificate (STC)

Supplemental Type Certificate (STC) 14 CFR Part 21, Subpart E

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Supplemental Type Certificate (STC) blog image

April 24, 2025

Steven Bentley

Sofema Aviation Services (SAS) considers key features of the FAA STC Process Introduction The Supplemental Type Certificate (STC) process is a critical regulatory mechanism ensuring that modifications to type-certified products are safe, effective, and compliant with FAA standards. Each participant—from the applicant to the FAA, STC holders, and aircraft operators—has specific roles and responsibilities in ensuring…

FAA Approved Parts & Exceptions

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FAA Approved Parts & Exceptions – Sofema Aviation Services. Image featuring a miniature airplane, an American flag, and barbed wire.

March 20, 2025

Steven Bentley

Sofema Aviation Services (SAS) considers the key aspects related to FAA Approved Parts & Exceptions Introduction – FAA Approved Parts FAA-approved parts are those that comply with the FAA’s stringent requirements for safety, quality, and airworthiness. These parts fall under the purview of 14 CFR regulations, primarily in Part 21, and must meet one of the following approval pathways: Parts Manufactured under…

Excel in your chosen role – Prepare for career advancement with the Aircraft Maintenance Organisation (AMO) Diploma

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Aircraft Maintenance Organisation

November 14, 2023

Steven Bentley

Do you want to grow professionally? Sofema Online provides the perfect way to help you achieve a broad understanding of the EASA Part 145 environment. Aircraft Maintenance Organisation (AMO) Diploma What’s included in the Diploma? The Aircraft Maintenance Organisation (AMO) Diploma contains 10+ separate online courses: EASA Part 145 Regulation EU 1321/2014 (Part 145 Initial) with VO Managing Organisational Competence in…

What is the EASA Changed Aeronautical Product Rule?

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Changed Aeronautical Product

October 18, 2023

Steven Bentley

Sofema Aviation Services (SAS) www.sassofia.com considers the certification basis of changed aeronautical product Introduction EASA has collaborated with the Federal Aviation Administration (FAA) and Transport Canada (TCCA) on the further improvement of the guidance on the implementation of the ‘Changed Product Rule’ (Part 21.A.101). With this rule, EASA establishes the type-certification basis for changes to Type…