AC 147-3C

Advisory circular · Certification and Operation of Aviation Maintenance Technician Schools

Approved
March 22, 2022
Last reviewed
September 12, 2024
Cancels
AC147-3B
Family
AC 147-3 · 4 versions
Revision
C
14 CFR parts
147, 65

Guidance, not mandatory unless a rule or AD requires it. DRS record last changed November 21, 2025.

Show pages 56–67

Appendix D D-6 [Applicant] ensures that instructors who hold an FAA-issued mechanic certificate also hold the appropriate rating relative to the courses/course content the instructor teaches by requiring the instructor to provide [Applicant] with a copy of their FAA-issued mechanic certificate. A copy of the instructor’s FAA-issued mechanic certificate is kept on file by [Applicant].

(2) If they do not hold a mechanic certificate, are otherwise specifically qualified to teach their assigned content; and [Applicant] ensures that instructors who do not hold an FAA-issued mechanic certificate are specifically qualified to teach their assigned content. To ensure appropriate qualifications, [Applicant] will request and review the instructor evidence of past training and experience and assign teaching content as appropriate to that training/experience. A copy of the specifically qualified instructors resume and training is kept on file by [Applicant].

(c) Ensure the student-to-instructor ratio does not exceed 25:1 for any shop class.

[Applicant] ensures that shop classes maintain a 25:1 student-to-instructor ratio by [insert a description of how the school ensures this ratio].

§ 147.21, Certificate of Completion.

Each certificated aviation maintenance technician school must provide an authenticated document to each graduating student, indicating the student’s date of graduation and curriculum completed.

[Applicant] will provide a document to each graduating student that includes the following:

• Student’s name.

• Title of the curriculum from which the student graduated.

• The graduation date.

• The school’s FAA-issued Air Agency Certificate number and school name.

• A raised seal evidencing authentication of the document [describe as appropriate to your school].

§

147.23, Quality Control System.

(a) Each certificated aviation maintenance technician school must:

(1) Be accredited within the meaning of 20 U.S.C. § 1001(a)(5); or [Applicant] has submitted as part of its application attachments evidence of its accreditation within the meaning of 20 U.S.C. § 1001(a)(5).

(If the school does not meets the accreditation requirements of § 147.23(a)(1), it must submit a QC system for approval. Enter “not applicable” as a response.)

(2) Establish and maintain a quality control system that meets the requirements specified in paragraph (b) of this section, and is approved by the Administrator.

Appendix D D-7 [Applicant] has submitted as part of its application attachments its QC system procedures for FAA approval.

(If the school meets the accreditation requirements of § 147.23(a)(1), there is no requirement to submit a QC system for approval. Enter “not applicable” as a response.)

(b) The quality control system specified in paragraph (a)(2) of this section must provide procedures for recordkeeping, assessment, issuing credit, issuing of final course grades, attendance, ensuring sufficient number of instructors, granting of graduation documentation, and corrective action for addressing deficiencies.

[Applicant] has developed a QC system which includes the procedures required by § 147.23(b).

[Applicant] has submitted as part of its application attachments its QC system procedures for FAA approval.

(If the school meets the accreditation requirements of § 147.23(a)(1), there is no requirement to submit a QC system for approval. Enter “not applicable” as a response.)

§ 147.25, Minimum Passage Rate.

(a) Each certificated aviation maintenance technician school must maintain the pass rate specified in paragraph (b) for the most recent 3-year period.

(b) For students who take an FAA mechanic test under part 65 of this chapter within 60 days after graduation, at least 70% of students must pass one of the following tests or any combination thereof:

(1) Written test;

(2) Oral test; or

(3) Practical test.

(c) For students who take a combination of tests within the 60-day window specified in paragraph (b), an AMTS must count a failure on any one test as a student failure for purposes of d etermining the pass rate, unless that failed test is subsequently passed within the 60-day window.

[Applicant] understands that the school must maintain the pass rate described in § 147.25.

§ 147.27, Inspection.

A certificated aviation maintenance technician school must allow the Administrator such access as the Administrator determines necessary to inspect the one or more locations of the school for purposes of determining the school’s compliance with the requirements of this part.

[Applicant] acknowledges that the AMTS may be inspected at any time by the Administrator for purposes of determining the school’s compliance with the requirements of part 147. [Applicant] will allow the FAA access at any time to inspect the school’s primary location or any additional

Appendix D D-8 training location for the purpose of determining the school’s compliance with the requirements of part 147.

§ 147.29, Display of Certificate.

A certificated aviation maintenance technician school must display its aviation maintenance technician school certificate at a place in each location of the school, including the primary location and any additional fixed locations, that is visible by and normally accessible to the public.

[Applicant] will display its FAA Air Agency Certificate, or a copy of the certificate, [insert where the certificate(s) will be located] at the primary location, and [insert where the certificate is located] at each additional fixed location of the school, ensuring the certificate is visible by and normally accessible to the public.

§ 147.31, Early Testing.

When a student satisfactorily completes the general portion of a certificated aviation maintenance technician school’s curriculum, the school may issue an authenticated document that demonstrates the student’s preparedness to take the mechanic general written test in accordance with § 65.75(c) of this chapter.

[Applicant] will issue an authenticated document to students who have successfully completed the general portion of the school’s curriculum, showing the student’s preparedness to take the mechanic general written test in accordance with § 65.75(c).

In accordance with § 65.75(c), the school will ensure that it issues an authenticated document that demonstrates satisfactory completion of the general portion of the school’s curriculum, and specifies the completion date. The documentation will also include the student’s name, the school’s name, and the school’s FAA-issued Air Agency Certificate number.

Advisory Circular Feedback Form If you find an error in this AC, have recommendations for improving it, or have suggestions for new items/subjects to be added, you may let us know by contacting the Flight Standards Directives Management Officer at 9-AWA-AFB-120-Directives@faa.gov.

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