Recent blog posts

Sofema Aviation Services (SAS) considers key aspects of EASA Part 147 Practical Training

Practical Considerations TNA

For the purpose of identifying the specific elements constituting the training course, it is acceptable to use a filtering method based on criteria such as:

>> Frequency of the task;

>> Human factor issues associated to the task;

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Sofema Online (SOL) considers a brief summary of what each element of the required Safety Management System will be documented within the Maintenance Organisation MOE.

Introduction – Consider the following elements (required)

>> 3.1 Hazard identification and safety risk management schemes
>> 3.2 Internal safety reporting and investigations
>> 3.3 Safety action planning
>> 3.4 Safety performance monitoring
>> 3.5 Change management
>> 3.6 Safety training (including human factors) and promotion
>> 3.7 Immediate safety action and coordination with the operator’s emergency response plan (ERP)

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Sofema Online (SOL) reviews the Safety Precautions and Best Practices including preparation and cleaning related to the inspection of aviation composite during maintenance checks.


Maintaining aviation composites involves thorough inspections and approved repairs when needed to ensure the structural integrity of the aircraft.

Inspection of aircraft composite materials should be performed with utmost care, strictly following safety precautions and adhering to best practices. This will ensure the aircraft's structural integrity, guaranteeing the safety of its operations.

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Sofema Online (SOL) considers the fundamentals to provide a practical hands-on session to build process confidence and develop competence.


In this practical hands-on session, we will focus on assessing the serviceability of composite materials using an aviation composite tap testing hammer. The tap testing method allows us to detect and evaluate such damage by analyzing the acoustic response of the composite material. Let's dive into the step-by-step procedure.

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Sofema Online (SOL) considers the key aspects of the CCA process

Common Cause Analysis

Common Cause Analysis (CCA) describes the method used to identify the potential for common-cause failures (CCFs) within a system, where multiple components fail simultaneously due to a single event or shared cause.

In the context of certification, a comprehensive CCA is crucial. Regulatory bodies require a systematic approach to identifying and mitigating safety risks, including CCFs. Therefore, demonstrating a rigorous CCA is often a requirement for certification of an aviation flight control system

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Sofema Online (SOL) considers the challenges related to the following damage of composite material

>> Barely Visible Damage (BVD)
>> and Externally Non-Visible Damage (NVD).


Composite materials typically do not don’t show damage in the same way metals do. Additionally, composites are susceptible to hidden cracks and defects that may occur during manufacturing or service.

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Sofema Online (SOL) considers core terms and definitions familiar within EASA European Aviation Domains.

Aviation Cybersecurity: The protection of aviation systems, networks, and data from unauthorized access, disruption, or modification.

Cybersecurity Incident: Any unauthorized or malicious activity that poses a threat to the confidentiality, integrity, or availability of aviation systems and data.

Cyber Threat Intelligence (CTI): Information about potential or current attacks that threaten an organization. CTI in the aviation industry often includes threats to aviation security systems and infrastructure.

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Sofema Online (SOL) considers the major challenges related to the need to address Cyber Security.

Aviation Cyber Security Strategy Introduction

The civil aviation sector is increasingly reliant on the availability of information and communications technology systems, as well as on the integrity and confidentiality of data.

The threat posed by possible cyber incidents to civil aviation is continuously evolving, with threat actors focusing on malicious intents, disruptions of business continuity and the theft of information for political, financial or other motivations.

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Sofema Online (SOL) considers the requirements introduced following the release of Annex VI to ED Decision 2023/010/R ‘AMC and GM to Part-145 — Issue 2, Amendment 6’


According to EASA  - The current European aviation safety regulatory framework contains a series of requirements which are aimed at reducing the likelihood of an accident happening.

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Sofema Online (SOL) considers the use of the ICAO 5 x 5 Matrix as a Risk Assessment Tool.


ICAO 5 x 5 Risk Assessment is a widely used risk assessment methodology in the aviation industry. It involves the assessment of the likelihood and severity of a potential risk and assigning a score to each based on a five-point scale. The scores are then multiplied to give an overall risk score.

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Sofema Online (SOL) considers the terms, definitions, and differences related to Practical Assessment from an EASA perspective.


 Appendix III 4.2.

  • Practical Assessment is performed by Part-147 within an approved maintenance environment.

>>  (Part-145, with A rating, manufacturer) under the Part-147 approval

>>  Defined maintenance environment as described in the directly approved procedure by the competent authority (66.B.130) - Reference: Appendix III 1(b)

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Sofema Online (SOL) considers best practices and procedures related to Aircraft Lavatory Servicing.


Aircraft toilet servicing is a vital aspect of aircraft maintenance. Ensuring that the vacuum toilet system operates flawlessly is essential for the well-being and comfort of passengers as well as health and sanitation.

By adhering to these health and safety standards, airlines and maintenance providers can ensure the well-being of their employees, passengers, and the environment

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Sofema Online (SOL) takes into consideration the exposure which is presented by Foreign Object Debris (FOD)

The Menace of Foreign Object Debris in Maintenance Overhaul Facilities: An Exploration of Safety Exposure

>> Foreign Object Debris (FOD) refers to a substance, debris, or particle which is alien to the component or system and therefore has the potential to cause damage.
>> Foreign Object Debris in maintenance overhaul facilities is a significant concern due to the potential damage to aircraft, associated safety risks, and considerable financial implications.
>> A comprehensive approach is required to address this problem, encompassing technological solutions, rigorous procedures, continuous training, and a robust FOD awareness culture.
>> Preventing FOD in these facilities is not just about maintaining efficiency or reducing costs but is crucial for ensuring the safety of operations.

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Sofema Online (SOL)  reviews best practices for a routine Aircraft Cabin Cleaning Operation – Consider the Following Example Work Instruction

Introduction & Safety Precautions

  • Ensure an organized approach to cleaning. Utilize the right tools, technology, and cleaning solutions for optimal results.
  • Always wear appropriate protective equipment, such as gloves and masks.
  • Ensure the aircraft is properly ventilated during cleaning.
  • Store cleaning chemicals in a safe location, away from children and pets.
  • Follow the manufacturer's instructions for all cleaning equipment and solutions.
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Sofema Online (SOL) considers the role of CPCP ADs and the responsibility for updating the Aircraft Maintenance Program (AMP)


Each CPCP, whether originally mandated by AD or later incorporated into the MPD for an aircraft, includes certain definitions to lay the groundwork and baselines for the programs.

Corrosion is a progressive condition and generally becomes more serious as it moves deeper into the grain of the affected metal. Therefore, different levels of corrosion are defined: Level 1 being the least serious, Level 2 being increasingly problematic, and Level 3 being the highest. However, these definitions were never standardized, although they are largely well-understood by CAAs, manufacturers, and the industry.

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Sofema Online (SOL) reviews the development of CPCP from Standalone to incorporation within the MRB process

Introduction “Corrosion Prevention and Control Programme” (CPCP)

This means a document reflecting a systematic approach to prevent and control corrosion in an aeroplane’s primary structure, consisting of basic corrosion tasks, including inspections, areas subject to those tasks, defined corrosion levels and compliance times (implementation thresholds and repeat intervals).

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Sofema Online (SOL) considers the procedures for completion and use of the authorized release certificate, FAA Form 8130-3, Airworthiness Approval Tag

General Considerations and Comments (for details please see the order)

Issuance of FAA Form 8130-3 as an airworthiness approval does not constitute an export approval, because compliance with a specific country’s or jurisdiction’s special import requirements may not have been verified.

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Sofema Online (SOL) considers best practices and health and safety requirements to ensure the correct management of potable water for use in aircraft

Introduction to Aircraft Portable Water

Maintaining the quality of potable water on aircraft requires regular testing, vigilant monitoring, and adherence to best practices. Proper treatment and handling procedures, combined with a robust testing regimen, can ensure that passengers and crew have access to safe drinking water during their flights.

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 Sofema Online looks at the essential elements of a functioning EASA Part 145 Organisation

Risk management

Risk Management is primarily comprised of two elements.

>> Hazard identification

>> Risk Assessment (and mitigation)

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Sofema Online (SOL) Considers the procedures for completion and use of Electronic Authorized Release Certificate, FAA Form 8130-3, Airworthiness Approval Tag

General Procedures for the Use of Electronic FAA Form 8130-3

>> The use of the electronic transfer FAA Form 8130-3 procedures is strictly voluntary when issuing FAA Form 8130-3 for its intended purpose as specified in chapters 2, 3, and 4 of this order.
>> If authorized persons elect to implement the following procedures, it must be understood that both the originator and recipient of the electronic form must comply with the procedures in this chapter. If for whatever reason the data recipient is unable to accept the electronic form, the issuance of the form must be in paper format in accordance with the appropriate chapter of this order.
>> Those authorized persons who elect to issue the electronic FAA Form 8130-3 for products and articles must comply with the standardized set of data formats, the ATA Spec 2000.

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