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147.A.120 requires the organisation to produce and maintain a Maintenance Training Organisation Exposition (MTOE) that describes the organisation's structure, procedures, training courses, and how it complies with Part 147.
What it means in practice
The MTOE is the primary document that describes how the organisation meets each Part 147 requirement. It must include the organisation's management structure, the responsibilities of key personnel, the facilities and resources available, a description of each approved training course and examination, and the procedures for all training, examination, quality, and record-keeping activities. The MTOE must be accepted by the competent authority and kept current.
The MTOE serves as the basis for competent authority oversight. Auditors assess the organisation's compliance by comparing its actual practices against the procedures described in the MTOE. Any discrepancy between the exposition and reality is a finding.
Key requirements
The MTOE must contain all the information specified in the regulation, including management structure, scope of approval, course descriptions, personnel details, facility descriptions, and procedures for training, examination, quality assurance, and records management. It must be amended whenever changes occur and amendments must be submitted to the competent authority for acceptance.
Common compliance gaps
The most common finding related to the MTOE is that it does not reflect current practices. Organisations change their procedures, personnel, or facilities without updating the exposition, creating discrepancies that are identified during audit. Another frequent issue is an MTOE that is overly generic and does not describe the organisation's specific processes in enough detail to be useful as a compliance reference.
Part 147 Training
Running a Part 147 approved training organisation?
Sofema's Part 147 course covers regulatory requirements for training organisations — from approval terms and syllabus standards to examination and record-keeping.
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