November 03, 2022


Sofema Aviation Service (SAS)Ā considers the requirements to ensure the appropriate level of Instructor & Assessor Competency.


  • It is necessary to manage the competence of Instructors, Examiners and Assessors to a standard which is documented by the EASA Part 147 Š¾rganisation within the MTOE.
  • In addition it shall be acceptable to the Competent Authority (CA).

Qualifying the Instructors Examiners and Assessors: (Part-147.A.105)

  • In general Instructors, Knowledge Examiners and Practical Training Assessors must have the following training, experience and qualifications:
  • Training in instruction techniques;
  • Training in Human Factors;
  • Knowledge of Part-66 and Part-147 requirements;
  • Be familiar with the procedures outlined in the MTOE;
  • Acceptable level of English Language Proficiency;
  • At least three years experience in related aircraft maintenance and/or maintenance training.
  • Category B1, B3, B2 or C Part-66 Licence with relevant type training when applicable or equivalent, or
  • Degree in Aeronautical, Mechanical or Electrical Engineering, or
  • VET/EQF Level 4 in Mechanical/Electrical or Electronic Engineering.

The typical minimum acceptable qualification required for the authorisation of Instructors will be as follows:

  • Engineering apprenticeship or acceptable alternative basic training.
  • 10 years aeronautic engineering experience or acceptable alternative.
  • Successful completion of a recognised ā€œInstructional Techniquesā€ course. (Note there is no industry recognised standard for this, so it needs to be ā€œapprovedā€ by the quality system of the EASA 147 Organisation.)
  • Appropriate initial training by manufacturer or approved training provider on all systems that he will be tasked to train on. (Manufactures Course or a course approved by an EASA Part 147 Organisation)
  • Evidence of the above will be held in the Instructors / Examiners or Assessors personal file.
  • Initial Company Procedures training must be completed and also validated with a copy held in the Instructors / Examiners or Assessors personal file. (Š¢his must happen prior to any activity being performed on behalf of the organisation)

Recurrent Training Requirements

  • Recurrent Company procedures training must be accomplished within 24 months from the initial training. (Contents of the recurrent training must be appropriate to the specific needs of the role and accepted by the Quality Manager).
  • Further qualification of instructors will include continuation and refresher training.
  • Continuation training will ensure that the instructorā€™s technical knowledge is kept updated. This training may take the form of formal courses, attendance at technical conferences and seminars or by reviewing new material sent through by system manufacturers.
  • Continuation training will also cover non-technical areas such as Human Factors in Maintenance.

Note – Instructors will typically receive a minimum of thirty-five hours continuation / refresher training in any two-year period.

  • The individual needs of each instructor will be ascertained at the annual competency review at which time any individual staff members personal development will be discussed with the Quality and Training Manager.
  • The Training manager will carry out a continuing program of Instructor assessments the results of the assessment will be logged and used to track the performance of each Instructor. (This is a QC function)
  • The Training manager, will ensure that all Instructors are familiar with the requirements of Part-66 and Part-147. (The requirement to update on EASA regulations is particularly important due to the functional processes of EASA) Airworthiness Directives (A.D.) updates shall be made available to the instructors as part of the supplement material which will be provided to each course being conducted.

Instructor RecordsĀ – All additional training required will be recorded and held on file.

  • As additional instructor approvals are added to the Instructors portfolio, relevant information will be recorded within the personal file and the capability will be added to the MTOE on the next revision or if necessary a temporary revision will be raised.
  • Course critiques will be reviewed by the training Manager and the results will be consolidated with the information being used in support of the Instructor Competence Management Process.

Next Steps

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Sofema Aviation ServicesĀ www.sassofia.comĀ and Sofema OnlineĀ www.sofemaonline.comĀ provide Classroom, Webinar, and Online training related to regulatory compliance with EASA Part 147 & EASA Part 66. For additional details please visit our websites or emailĀ


aviation, Competent Authority (CA), EASA 147, EASA Part 147, EASA Part 66, Instructional Staff, Instructor Records, MTOE, Part 147 Compliance, Practical Training Assessor, qualification, Recurrent Training Requirements, SAS blogs