14 CFR Part 147

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14 C.F.R. PART 147—AVIATION
MAINTENANCE TECHNICIAN
SCHOOLS
Title 14 - Aeronautics and Space
Title 14: Aeronautics and Space
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PART 147—AVIATION MAINTENANCE TECHNICIAN SCHOOLS

Section Contents
Subpart A—General
§ 147.1 Applicability.
§ 147.3 Certificate required.
§ 147.5 Application and issue.
§ 147.7 Duration of certificates.
Subpart B—Certification Requirements
§ 147.11 Ratings.
§ 147.13 Facilities, equipment, and material requirements.
§ 147.15 Space requirements.
§ 147.17 Instructional equipment requirements.
§ 147.19 Materials, special tools, and shop equipment requirements.
§ 147.21 General curriculum requirements.
§ 147.23 Instructor requirements.
Subpart C—Operating Rules
§ 147.31 Attendance and enrollment, tests, and credit for prior instruction or experience.
§ 147.33 Records.

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§ 147.35 Transcripts and graduation certificates.
§ 147.36 Maintenance of instructor requirements.
§ 147.37 Maintenance of facilities, equipment, and material.
§ 147.38 Maintenance of curriculum requirements.
§ 147.38a Quality of instruction.
§ 147.39 Display of certificate.
§ 147.41 Change of location.
§ 147.43 Inspection.
§ 147.45 Advertising.
Appendix A to Part 147—Curriculum Requirements
Appendix B to Part 147—General Curriculum Subjects
Appendix C to Part 147—Airframe Curriculum Subjects
Appendix D to Part 147—Powerplant Curriculum Subjects

Authority: 49 U.S.C. 106(g), 40113, 44701–44702, 44707–44709.
Source: Docket No. 1157, 27 FR 6669 July 13, 1962, unless otherwise noted.

Subpart A—General
top
§ 147.1 Applicability.
top
This part prescribes the requirements for issuing aviation maintenance technician school
certificates and associated ratings and the general operating rules for the holders of those
certificates and ratings.
§ 147.3 Certificate required.
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No person may operate as a certificated aviation maintenance technician school without, or
in violation of, an aviation maintenance technician school certificate issued under this part.

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[Doc. No. 15196, 41 FR 47230, Oct. 28, 1976]
§ 147.5 Application and issue.
top
(a) An application for a certificate and rating, or for an additional rating, under this part is
made on a form and in a manner prescribed by the Administrator, and submitted with—
(1) A description of the proposed curriculum;
(2) A list of the facilities and materials to be used;
(3) A list of its instructors, including the kind of certificate and ratings held and the
certificate numbers; and
(4) A statement of the maximum number of students it expects to teach at any one time.
(b) An applicant who meets the requirements of this part is entitled to an aviation
maintenance technician school certificate and associated ratings prescribing such
operations specifications and limitations as are necessary in the interests of safety.
[Docket No. 1157, 27 FR 6669, July 13, 1962, as amended by Amdt. 147–5, 57 FR 28959,
June 29, 1992]
§ 147.7 Duration of certificates.
top
(a) An aviation maintenance technician school certificate or rating is effective until it is
surrendered, suspended, or revoked.
(b) The holder of a certificate that is surrendered, suspended, or revoked, shall return it to
the Administrator.
[Doc. No. 1157, 27 FR 6669, July 19, 1962, as amended by Amdt. 147–3, 41 FR 47230, Oct.
28, 1976]
Subpart B—Certification Requirements

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top
§ 147.11 Ratings.
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The following ratings are issued under this part:
(a) Airframe.
(b) Powerplant.
(c) Airframe and powerplant.
§ 147.13 Facilities, equipment, and material requirements.
top
An applicant for an aviation maintenance technician school certificate and rating, or for an
additional rating, must have at least the facilities, equipment, and materials specified in
§§147.15 to 147.19 that are appropriate to the rating he seeks.
§ 147.15 Space requirements.
top
An applicant for an aviation maintenance technician school certificate and rating, or for an
additional rating, must have such of the following properly heated, lighted, and ventilated
facilities as are appropriate to the rating he seeks and as the Administrator determines are
appropriate for the maximum number of students expected to be taught at any time:
(a) An enclosed classroom suitable for teaching theory classes.
(b) Suitable facilities, either central or located in training areas, arranged to assure proper
separation from the working space, for parts, tools, materials, and similar articles.
(c) Suitable area for application of finishing materials, including paint spraying.
(d) Suitable areas equipped with washtank and degreasing equipment with air pressure or
other adequate cleaning equipment.

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(e) Suitable facilities for running engines.
(f) Suitable area with adequate equipment, including benches, tables, and test equipment,
to disassemble, service, and inspect.
(1) Ignition, electrical equipment, and appliances;
(2) Carburetors and fuel systems; and
(3) Hydraulic and vacuum systems for aircraft, aircraft engines, and their appliances.
(g) Suitable space with adequate equipment, including tables, benches, stands, and jacks,
for disassembling, inspecting, and rigging aircraft.
(h) Suitable space with adequate equipment for disassembling, inspecting, assembling,
troubleshooting, and timing engines.
[Amdt. 147–2, 35 FR 5533, Apr. 3, 1970, as amended by Amdt. 147–5, 57 FR 28959, June
29, 1992]
§ 147.17 Instructional equipment requirements.
top
(a) An applicant for a mechanic school certificate and rating, or for an additional rating,
must have such of the following instructional equipment as is appropriate to the rating he
seeks:
(1) Various kinds of airframe structures, airframe systems and components, powerplants,
and powerplant systems and components (including propellers), of a quantity and type
suitable to complete the practical projects required by its approved curriculums.
(2) At least one aircraft of a type currently certificated by FAA for private or commercial
operation, with powerplant, propeller, instruments, navigation and communications
equipment, landing lights, and other equipment and accessories on which a maintenance
technician might be required to work and with which the technician should be familiar.
(b) The equipment required by paragraph (a) of this section need not be in an airworthy
condition. However, if it was damaged, it must have been repaired enough for complete
assembly.

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(c) Airframes, powerplants, propellers, appliances, and components thereof, on which
instruction is to be given, and from which practical working experience is to be gained,
must be so diversified as to show the different methods of construction, assembly,
inspection, and operation when installed in an aircraft for use. There must be enough units
so that not more than eight students will work on any one unit at a time.
(d) If the aircraft used for instructional purposes does not have retractable landing gear
and wing flaps, the school must provide training aids, or operational mock-ups of them.
[Doc. No. 1157, 27 FR 6669, July 19, 1962, as amended by Amdt. 147–5, 57 FR 28959, June
29, 1992]
§ 147.19 Materials, special tools, and shop equipment requirements.
top
An applicant for an aviation maintenance technician school certificate and rating, or for an
additional rating, must have an adequate supply of material, special tools, and such of the
shop equipment as are appropriate to the approved curriculum of the school and are used
in constructing and maintaining aircraft, to assure that each student will be properly
instructed. The special tools and shop equipment must be in satisfactory working condition
for the purpose for which they are to be used.
[Amdt. 147–5, 57 FR 28959, June 29, 1992]
§ 147.21 General curriculum requirements.
top
(a) An applicant for an aviation maintenance technician school certificate and rating, or for
an additional rating, must have an approved curriculum that is designed to qualify his
students to perform the duties of a mechanic for a particular rating or ratings.
(b) The curriculum must offer at least the following number of hours of instruction for the
rating shown, and the instruction unit hour shall not be less than 50 minutes in length—
(1) Airframe—1,150 hours (400 general plus 750 airframe).
(2) Powerplant—1,150 hours (400 general plus 750 powerplant).

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(3) Combined airframe and powerplant—1,900 hours (400 general plus 750 airframe and
750 powerplant).
(c) The curriculum must cover the subjects and items prescribed in appendixes B, C, or D,
as applicable. Each item must be taught to at least the indicated level of proficiency, as
defined in appendix A.
(d) The curriculum must show—
(1) The required practical projects to be completed;
(2) For each subject, the proportions of theory and other instruction to be given; and
(3) A list of the minimum required school tests to be given.
(e) Notwithstanding the provisions of paragraphs (a) through (d) of this section and
§147.11, the holder of a certificate issued under subpart B of this part may apply for and
receive approval of special courses in the performance of special inspection and preventive
maintenance programs for a primary category aircraft type certificated under §21.24(b) of
this chapter. The school may also issue certificates of competency to persons successfully
completing such courses provided that all other requirements of this part are met and the
certificate of competency specifies the aircraft make and model to which the certificate
applies.
[Doc. No. 1157, 27 FR 6669, July 13, 1962 as amended by Amdt. 147–1, 32 FR 5770 Apr. 11,
1967; Amdt. 147–5, 57 FR 28959, June 29, 1992; Amdt. 147–6, 57 FR 41370, Sept. 9, 1992]
§ 147.23 Instructor requirements.
top
An applicant for an aviation maintenance technician school certificate and rating, or for an
additional rating, must provide the number of instructors holding appropriate mechanic
certificates and ratings that the Administrator determines necessary to provide adequate
instruction and supervision of the students, including at least one such instructor for each
25 students in each shop class. However, the applicant may provide specialized instructors,
who are not certificated mechanics, to teach mathematics, physics, basic electricity, basic
hydraulics, drawing, and similar subjects. The applicant is required to maintain a list of the
names and qualifications of specialized instructors, and upon request, provide a copy of the
list to the FAA.

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[Amdt. 147–5, 57 FR 28959, June 29, 1992]
Subpart C—Operating Rules
top
§ 147.31 Attendance and enrollment, tests, and credit for prior instruction or
experience.
top
(a) A certificated aviation maintenance technician school may not require any student to
attend classes of instruction more than 8 hours in any day or more than 6 days or 40 hours
in any 7-day period.
(b) Each school shall give an appropriate test to each student who completes a unit of
instruction as shown in that school's approved curriculum.
(c) A school may not graduate a student unless he has completed all of the appropriate
curriculum requirements. However, the school may credit a student with instruction or
previous experience as follows:
(1) A school may credit a student with instruction satisfactorily completed at—
(i) An accredited university, college, junior college;
(ii) An accredited vocational, technical, trade or high school;
(iii) A military technical school;
(iv) A certificated aviation maintenance technician school.
(2) A school may determine the amount of credit to be allowed—
(i) By an entrance test equal to one given to the students who complete a comparable
required curriculum subject at the crediting school;
(ii) By an evaluation of an authenticated transcript from the student's former school; or
(iii) In the case of an applicant from a military school, only on the basis of an entrance test.

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(3) A school may credit a student with previous aviation maintenance experience
comparable to required curriculum subjects. It must determine the amount of credit to be
allowed by documents verifying that experience, and by giving the student a test equal to
the one given to students who complete the comparable required curriculum subject at the
school.
(4) A school may credit a student seeking an additional rating with previous satisfactory
completion of the general portion of an AMTS curriculum.
(d) A school may not have more students enrolled than the number stated in its application
for a certificate, unless it amends its application and has it approved.
(e) A school shall use an approved system for determining final course grades and for
recording student attendance. The system must show hours of absence allowed and show
how the missed material will be made available to the student.
[Amdt. 147–2, 35 FR 5534, Apr. 3, 1970, as amended by Amdt. 147–4, 43 FR 22643, May
25, 1978; Amdt. 147–5, 57 FR 28959, June 29, 1992]
§ 147.33 Records.
top
(a) Each certificated aviation maintenance technician school shall keep a current record of
each student enrolled, showing—
(1) His attendance, tests, and grades received on the subjects required by this part;
(2) The instruction credited to him under §147.31(c), if any; and
(3) The authenticated transcript of his grades from that school.
It shall retain the record for at least two years after the end of the student's enrollment, and
shall make each record available for inspection by the Administrator during that period.
(b) Each school shall keep a current progress chart or individual progress record for each of
its students, showing the practical projects or laboratory work completed, or to be
completed, by the student in each subject.
[Doc. No. 1157, 27 FR 6669, July 13, 1962]

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§ 147.35 Transcripts and graduation certificates.
top
(a) Upon request, each certificated aviation maintenance technician school shall provide a
transcript of the student's grades to each student who is graduated from that school or who
leaves it before being graduated. An official of the school shall authenticate the transcript.
The transcript must state the curriculum in which the student was enrolled, whether the
student satisfactorily completed that curriculum, and the final grades the student received.
(b) Each school shall give a graduation certificate or certificate of completion to each
student that it graduates. An official of the school shall authenticate the certificate. The
certificate must show the date of graduation and the approved curriculum title.
[Doc. No. 1157, 27 FR 6669, July 13, 1962, as amended by Amdt. 147–5, 57 FR 28959, June
29, 1992]
§ 147.36 Maintenance of instructor requirements.
top
Each certificated aviation maintenance technician school shall, after certification or
addition of a rating, continue to provide the number of instructors holding appropriate
mechanic certificates and ratings that the Administrator determines necessary to provide
adequate instruction to the students, including at least one such instructor for each 25
students in each shop class. The school may continue to provide specialized instructors
who are not certificated mechanics to teach mathematics, physics, drawing, basic
electricity, basic hydraulics, and similar subjects.
[Amdt. 147–5, 57 FR 28959, June 29, 1992]
§ 147.37 Maintenance of facilities, equipment, and material.
top
(a) Each certificated aviation maintenance technician school shall provide facilities,
equipment, and material equal to the standards currently required for the issue of the
certificate and rating that it holds.

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(b) A school may not make a substantial change in facilities, equipment, or material that
have been approved for a particular curriculum, unless that change is approved in advance.
§ 147.38 Maintenance of curriculum requirements.
top
(a) Each certificated aviation maintenance technician school shall adhere to its approved
curriculum. With FAA approval, curriculum subjects may be taught at levels exceeding
those shown in appendix A of this part.
(b) A school may not change its approved curriculum unless the change is approved in
advance.
[Amdt. 147–2, 35 FR 5534, Apr. 3, 1970, as amended by Amdt. 147–5, 57 FR 28960, June
29, 1992]
§ 147.38a Quality of instruction.
top
Each certificated aviation maintenance technician school shall provide instruction of such
quality that, of its graduates of a curriculum for each rating who apply for a mechanic
certificate or additional rating within 60 days after they are graduated, the percentage of
those passing the applicable FAA written tests on their first attempt during any period of
24 calendar months is at least the percentage figured as follows:
(a) For a school graduating fewer than 51 students during that period—the national passing
norm minus the number 20.
(b) For a school graduating at least 51, but fewer than 201, students during that period—the
national passing norm minus the number 15.
(c) For a school graduating more than 200 students during that period—the national
passing norm minus the number 10.
As used in this section, “national passing norm” is the number representing the percentage
of all graduates (of a curriculum for a particular rating) of all certificated aviation
maintenance technician schools who apply for a mechanic certificate or additional rating

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within 60 days after they are graduated and pass the applicable FAA written tests on their
first attempt during the period of 24 calendar months described in this section.
[Amdt. 147–2, 35 FR 5534, Apr. 3, 1970, as amended by Amdt. 147–3, 41 FR 47230, Oct.
28, 1976]
§ 147.39 Display of certificate.
top
Each holder of an aviation maintenance technician school certificate and ratings shall
display them at a place in the school that is normally accessible to the public and is not
obscured. The certificate must be available for inspection by the Administrator.
§ 147.41 Change of location.
top
The holder of an aviation maintenance technician school certificate may not make any
change in the school's location unless the change is approved in advance. If the holder
desires to change the location he shall notify the Administrator, in writing, at least 30 days
before the date the change is contemplated. If he changes its location without approval, the
certificate is revoked.
§ 147.43 Inspection.
top
The Administrator may, at any time, inspect an aviation maintenance technician school to
determine its compliance with this part. Such an inspection is normally made once each six
months to determine if the school continues to meet the requirements under which it was
originally certificated. After such an inspection is made, the school is notified, in writing, of
any deficiencies found during the inspection. Other informal inspections may be made
from time to time.
§ 147.45 Advertising.
top

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(a) A certificated aviation maintenance technician school may not make any statement
relating to itself that is false or is designed to mislead any person considering enrollment
therein.
(b) Whenever an aviation maintenance technician school indicates in advertising that it is a
certificated school, it shall clearly distinguish between its approved courses and those that
are not approved.
Appendix A to Part 147—Curriculum Requirements
top
This appendix defines terms used in appendices B, C, and D of this part, and describes the
levels of proficiency at which items under each subject in each curriculum must be taught,
as outlined in appendices B, C, and D.
(a) Definitions. As used in appendices B, C, and D:
(1) Inspect means to examine by sight and touch.
(2) Check means to verify proper operation.
(3) Troubleshoot means to analyze and identify malfunctions.
(4) Service means to perform functions that assure continued operation.
(5) Repair means to correct a defective condition. Repair of an airframe or powerplant
system includes component replacement and adjustment, but not component repair.
(6) Overhaul means to disassemble, inspect, repair as necessary, and check.
(b) Teaching levels. (1) Level 1 requires:
(i) Knowledge of general principles, but no practical application.
(ii) No development of manipulative skill.
(iii) Instruction by lecture, demonstration, and discussion.
(2) Level 2 requires:
(i) Knowledge of general principles, and limited practical application.

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(ii) Development of sufficient manipulative skill to perform basic operations.
(iii) Instruction by lecture, demonstration, discussion, and limited practical application.
(3) Level 3 requires:
(i) Knowledge of general principles, and performance of a high degree of practical
application.
(ii) Development of sufficient manipulative skills to simulate return to service.
(iii) Instruction by lecture, demonstration, discussion, and a high degree of practical
application.
(c) Teaching materials and equipment. The curriculum may be presented utilizing
currently accepted educational materials and equipment, including, but not limited to:
calculators, computers, and audio-visual equipment.
[Amdt. 147–2, 35 FR 5534, Apr. 3, 1970, as amended by Amdt. 147–5, 57 FR 28960, June
29, 1992]
Appendix B to Part 147—General Curriculum Subjects
top
This appendix lists the subjects required in at least 400 hours in general curriculum
subjects.
The number in parentheses before each item listed under each subject heading indicates
the level of proficiency at which that item must be taught.
Teaching

level

a. basic electricity

(2)

1

[Amdt. 147–2, 35 FR 5534, Apr. 3, 1970, as amended by Amdt. 147–5, 57 FR
28960, June 29, 1992]
Appendix C to Part 147—Airframe Curriculum Subjects
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This appendix lists the subjects required in at least 750 hours of each airframe
curriculum, in addition to at least 400 hours in general curriculum subjects.
The number in parentheses before each item listed under each subject heading
indicates the level of proficiency at which that item must be taught.

I. Airframe Structures Teaching

level

II. Airframe Systems and Components Teaching

level

[Amdt. 147–2, 35 FR 5535, Apr. 3, 1970, as amended by Amdt. 147–5, 57 FR 28960,
June 29, 1992]
Appendix D to Part 147—Powerplant Curriculum Subjects
top
This appendix lists the subjects required in at least 750 hours of each powerplant
curriculum, in addition to at least 400 hours in general curriculum subjects.
The number in parentheses before each item listed under each subject heading
indicates the level of proficiency at which that item must be taught.

I. Powerplant Theory and Maintenance Teaching

II. Powerplant Systems and Components Teaching

level

level

(Sec. 6(c), Dept. of Transportation Act; 49 U.S.C. 1655(c))
[Amdt. 147–2, 35 FR 5535, Apr. 3, 1970, as amended by Amdt. 147–5, 57 FR 28961,
June 29, 1992]
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