Blog posts tagged in Part 21

Sofema Online (SOL) looks at some of the common questions associated with the use of FAA 8130-3.

Introduction - Does the 8130-3 Guidance Seem Confusing?

8130-3 was not designed to be solely a return-to-service document for use in complying with 14 CFR 43.9. Its other uses include export airworthiness approvals of Class II and Class III products; conformity determinations; identifying the airworthiness approval status of products (engines and propellers) in domestic transactions; airworthiness approval of parts and appliances under 14 CFR 21.305; and splitting bulk shipments of previously shipped parts.

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Sofema Online (SOL) considers the change introduced into Part 21 subpart G effective from March 2023.


EASA has clarified that effective 7th March 2023 (2-year transition for existing organisations) a design or production organisation shall have a management system made of two elements:

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Sofema Online (SOL) considers the safety management system elements within an EASA Part 21 Subpart G Production Organisation Approval holder (POAH)

Introduction (GM1 21.A.139(c))

Safety management seeks to proactively identify hazards and mitigate the related safety risks before they result in aviation accidents and incidents.

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Sofema Online (SOL) looks at the various terms related to the codes or other certification specifications governing the design and performance of civil aeronautical products and articles.

“Amended Type Certificate (ATC)” means a design change made by the TC holder that requires an amendment to the TC and the Type Certification Data Sheet (TCDS).

“Appliance” means any instrument, mechanism, equipment, part, apparatus, appurtenance, or accessory, including communications equipment, that is used or intended to be used in operating or controlling an aircraft in flight, is installed in or attached to the aircraft, and is not part of an airframe, aircraft engine, or propeller.

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Overview by Sofema Online (SOL)

Validation of Design Certificates (Typically None Minor)

The Technical Agents have established two paths for validation:

» Streamlined validation; or

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Overview by Sofema Online (SOL)

Introduction – TIPs provide specific procedures related to the following:

»  Airworthiness certificates and monitoring of civil aeronautical products;

» Environmental certificates and testing of civil aeronautical products;

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Sofema Online Considers the Technical Records & Documentation Management

Requirements are driven by EASA Part 21 Regulatory requirements

Introduction – New Major Repair

Relevant substantiation data associated with a new major repair design and record keeping should include:

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Sofema Online (SOL) reviews the applicable material related to EASA Initial Certification.


EASA Part 21 regulates the approval of aircraft design and production organisations and the certification of aircraft Products, Parts and Appliances.

AMC & GM 14/07/2021 AMC & GM to Part 21 — Issue 2, Amendment 13
Reference - Issue 2 (full) originally dated 30/10/2012 (AMC & GM to Part 21 — Issue 2) with 13 amendments.

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Posted by on in Regulatory

Sofema Online (SOL) introduces Operational Suitability Data.

Introduction & Regulatory Drivers for OSD

With the entry into force of Commission Regulation (EU) No 69/2014 on 18 February 2014 the concept of Operational Suitability Data (OSD) was implemented, integrating operational evaluation elements into the certification design process as foreseen in the Basic Regulation1. Available operational suitability data are then referenced in the applicable Type Certificate Data Sheet (TCDS).

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Sofema Online (SOL) considers the role and purpose of OSD.

Introduction Operational Suitability Data (OSD)

The European Commission published OSD requirements on 27 January 2014 requiring aircraft (and Helicopter) manufacturers, to submit data that EASA considers important for safe operations.

Operational Suitability Data (OSD)” means data, which are part of an aircraft type-certificate, restricted type- certificate or supplemental type-certificate, consisting of all of the following:

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Sofema Online (SOL) considers audit best practices.

With the exception of EASA Part 21 Subpart J Design Organisation Approval which as you will be aware is managed directly by EASA.

The process for all other approvals (Air Carrier – Part 145 / Part M / Part 147 / Part 21 Subpart G POE / ATO) is managed by the Competent Authority.

Essentially works as follows:

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Review by SofemaOnline (SOL)


Commission Delegated Regulation (EU) 2019/897 of 12 March 2019 - Inclusion of Risk-Based Compliance Verification in Annex I and the Implementation of Requirements for Environmental Protection

• In accordance with Article 83 of Regulation (EU) 2018/1139, the Agency itself, or through national aviation authorities or qualified entities, is to carry out investigations necessary for the performance of its certification tasks.
• The Agency assesses the applications but it is not required to carry out an exhaustive investigation in all cases pursuant to Article 83 of Regulation (EU) 2018/1139.

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Sofema Online (SOL) looks at the requirements related to compliance with EASA Regulation (EU) No 748/2012 Part 21 Subpart H 21.A.171 Scope.


Airworthiness Certificates are issued in accordance with 21.A.172 Eligibility

       » Any natural or legal person under whose name an aircraft is registered or will be registered in a Member State (‘Member State of registry’), or its representative, shall be eligible as an applicant for an airworthiness certificate for that aircraft under this Subpart. 21.A.173 Classification.

Airworthiness certificates shall be classified as follows:

       » Certificates of airworthiness shall be issued to aircraft which conform to a type certificate that has been issued in accordance with this Annex I (Part 21);
       » Restricted certificates of airworthiness shall be issued to aircraft:

  o   Which conform to a restricted type-certificate that has been issued in accordance with this Annex I (Part 21); or
  o   Which have been shown to the Agency to comply with specific airworthiness specifications ensuring adequate safety. 21.A.174 Application.

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SofemaOnline is pleased to announce the availability of a dedicated training program for EASA Third Country Part 145 Component Maintenance Organisation Part 66 Module 9 & Part 66 Module 10 online training which taken together is available as a specially priced package.

Introduction by SofemaOnline (SOL)

Aviation Safety and System Reliability both sit at the forefront of our aviation system having the highest priority. To enable a high level of safety typically requires strong regulations that demonstrate ICAO compliance and organizational competence to ensure that the regulatory environment is understood and followed

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Sofema Online provides a brief introduction to EASA Part 21 Subpart G Process and Privileges.

An EASA Part 21 Subpart G organization is an organization which has approval to manufacture aircraft parts and appliances in conformity with approved data.

The production organization certifies and releases the product on either Form 52 for a complete aircraft or EASA Form 1 for components.

Production Organisation Approvals (POAs) are managed by EASA in accordance with Subpart G of Regulation (EC) No 748/2012.

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SofemaOnline provides online regulatory training courses to support the development of your Continuing Airworthiness Management Organisation (CAMO)

The following information supports consideration of which training is appropriate for a CAMO engaged with Large Aircraft (Aircraft above 5700 KGS).

All the following courses are available via the online training platform SofemaOnline.

Consider the benefits of enrolling and receiving SofemaOnline training courses:

Enjoy an Easy Online learning experience with and SAS-e-aviation YouTube Video Channel.

Last modified on is pleased to offer both EASA compliant Regulatory Training including Part M, Part 145 & Part 21 (SOL) is a service provided by Sofema Aviation Services (SAS) offering online training by qualified technical aviation instructors including UK Nationals as well as Russian speaking trainers in the field of aviation.

Considering the EASA / FAA Differences

The FAA system is based on Direct Inspection and oversight and in addition uses the services of Designated Engineering Representatives (DER) and Designated Airworthiness Representatives (DAR).

Last modified on (SOL) offers EASA compliant online regulatory training including Part 21 for CAMO

So what are the challenges to delivering an effective Compliance System within our Part M CAMO? Financial/Organizational/Manpower/Commercial/Contracted & Sub Contracted Service Providers?

Consider the relationship with Part 21 Subpart G & J organizations - The relationship is fundamentally Contract - means that in each case the organization is responsible to self-manage. Our role is to ensure oversight and diligent behavior.

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