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SHT-21 Certification

Certification of aircraft, engine, propeller and related parts that are designed and manufactured in our country is done by the Aircraft and Parts Certification Coordinating Section.

Also, approval of design and manufacturing organisation, publishing of type/supplemental type certification, approvals for parts and appliances, certification acceptance including  aircraft and parts that are designed and manufactured in foreign countries which they will register in our country, as well as the certification processes that are carried out in line with the production of Amateur/Home Built Aircrafts are all under the coordination duties.

The conformity to international standards for aircraft and parts that have been designed and manufactured in our country is implemented using national and international conformity assessment legislation that has been officially published.

In addition to these duties, the Aircraft and Parts Certification Coordinating Section also conducts certification panel meetings, attends test-validity activities, audit organizations and manage bilateral relations for aviation safety.

The Aircraft and Parts Certification Coordinating Section uses the following legislation.



Type Certificates (TC) and Type Certificate Data Sheets (TCDS)

Type Certificates (TC) and Type Certificate Data Sheets (TCDS) that have been issued so far by Turkish DGCA are listed below: 




Permit to Fly Process

A Permit to Fly is issued when a certificate of airworthiness is temporarily invalid or when compliance with those requirements has not yet been shown, but the aircraft is nevertheless capable of performing a safe flight as outlined in SHT-21.
The cases for which a permit to fly need to be issued are the following:
-          Research and development,
-          Showing compliance with regulations or certification specifications
-          Design or production organisations crew trainings,
-          Production flight testing of new production aircraft,
-          Flying aircraft under production between production facilities,
-          Flying the aircraft for customer acceptance ,
-          Delivering or exporting the new or used aircraft provided that design is approved
-          Flying the aircraft for Authority acceptance,
-          Market survey, including customer’s crew training,
-          Exhibition or air show,
-          Flying the aircraft to a location where maintenance or airworthiness review are to be performed, or to a place of storage,
-          Flying an aircraft at a weight in excess of its maximum certificated take off weight for flight beyond the normal range over water, or over land areas where adequate landing facilities or appropriate fuel is not available
-          Record breaking, air racing or similar competition,
-          Flying aircraft meeting the applicable airworthiness requirements before conformity to the environmental requirements has been found,
-          For non-commercial flying activity on individual non-complex aircraft or types for which a certificate of airworthiness or restricted certificate of airworthiness is not appropriate,
-          Flight operations of Unmanned Aerial Vehicles, maximum take-off mass/weight of which is between 4 kg and 150 kg
-          Aircraft that to be recorded to the Turkish DGCA registration.
Ferry Flights
Certificate of Special Flight Permit and Approval for Flight Conditions (Test/Ferry Flights)
It is granted prior to the flights to be operated by any aircraft for the following purposes;
-          Operating the aircraft for customer acceptance;
-          Delivering or exporting the aircraft;
-          Operating the aircraft for authority acceptance;
-          Market research, including the training of the customer team;
-          Operating the aircraft to any location or storage area, where the aircraft will be reviewed in terms of maintenance or airworthiness;
in order to prove that such aircraft is airworthy under the special circumstances, in accordance with the requirements of Sub-section P of Table-13 of SHT-21 Instruction.
In respect of test or technical flights of any aircraft bearing Turkish or International registration mark, which are non-planned, which are not performed due to any damage or deficiency, and which will be requested upon the periodical maintenance thereof or upon issuance of the Certificate of Release to Service (CRS), issued by the authorized maintenance organization, in order to fulfill the requirements specified under the relevant maintenance manual, Flight Information Center (FIC) division of the Directorate General of State Airports Authority (DGSAA) allows the test flight to be operated in compliance with the requirements available in the circular letter dated October 31 2012, without requiring the approval of the Office of Director General.
However; in the event that any aircraft fails to maintain its airworthiness status due to any unexpected damage or deficiency, then special flight permit is required to be obtained from our Turkish DGCA.
Documents Required During Application Application documents;
-          The Letter of Application stating the purpose, date and route of the flight to be operated
-          Application Form for Approval of Flight Conditions – SHGM Form 37
-          Application Form for Certificate of Special Flight Permit – SHGM Form 21
-          Details in relation to Flight Crew Members (Pilot License and Medical Certificate)
-          The written declaration of the technical personnel required to accompany the pilot during the flight, stating that such personnel is informed about operation of the flight under the special circumstances
-          Third Person Liability Insurance (Purpose-oriented and applicable)
-          Airworthiness Certificate for Exportation, or letter in relation thereto, in case of importation of aircraft
-          Type Certificate and TCDS (Type Certificate Data Sheet) in case of initial importation of the aircraft type
-          Commitment of Technician stating that it is appropriate to operate the Test and Ferry Flights
-          The latest Certificate of Release to Service (CRS) in the event that the aircraft has been released to service
-          AD/SB Life-Limited Parts and Maintenance Status, in the event that the aircraft has been used
-          Details and Documents Regarding Special Circumstances (Storage, Hard Landing, Accident, etc.), if any
-          Receipt of Service Fee

Product Type Certification

A type certificate is issued to demonstrate compliance with the related Certification Specifications for the design of products (aircraft, engine or propeller).
Certification Specifications are different for each product, part and appliance. Below Specifications published by EASA are followed during type certification activity within the scope of working arrangement (WA) by EASA (European Aviation Safety Agency).
  1. AMC-20 General Acceptable Means of Compliance for Airworthiness of Products, Parts and Appliances
  2. CS-22 Sailplanes and Powered Sailplanes
  3. CS-23 Normal, Utility, Aerobatic and Commuter Aeroplanes
  4. CS-25 Large Aeroplanes
  5. CS-26 Additional airworthiness specifications for operations
  6. CS-27 Small Rotorcraft
  7. CS-29 Large Rotorcraft
  8. CS-31GB Gas Balloons
  9. CS-31HB Hot Air Balloons
  10. CS-31TGB Tethered Gas Balloons
  11. CS-34 Aircraft Engine Emissions and Fuel Venting
  12. CS-36 Aircraft Noise
  13. CS-APU Auxiliary Power Units
  14. CS-AWO All Weather Operations
  15. CS-E Engines
  16. CS-ETSO European Technical Standard Orders
  17. CS-LSA Light Sport Aeroplanes
  18. CS-P Propellers
  19. CS-SIMD Simulator Data
  20. CS-STAN Standard Changes and Standard Repairs
  21. CS-VLA Very Light Aeroplanes
  22. CS-VLR Very Light Rotorcraft
  23. CS-MMEL Master Minimum Equipment List
  24. CS-GEN-MMEL Generic Master Minimum Equipment List
  25. CS-CCD Cabin Crew Data
  26. CS-FCD Flight Crew Data
  27. TR-UL: Ultra Light Aeroplanes
Pls find below the link for up-to-date specifications.
For aircraft, engine or propeller; Type Certificate applicants should make a detailed presentation at DGCA for their project first, and then they may apply to DGCA with related forms below.
Note: To have a type certificate, applicant should have DOA or accepted application for DOA.
Presentation includes;
-       General information about organization
-       Organizational structure and personnel
-       Technical information about the product
-       Projected schedule for the project
Application folder includes;
-       Application letter
-       SHGM Form 30 - Type Certificate Application Form
-       DOA (SHGM Form 83a - Design Organization Approval) or application for DOA (SHGM Form 80-Design Organization Application Form)
-       Proposed Certification Basis
-       An application for an aircraft type-certificate or restricted type-certificate shall be accompanied by;
  • a three-view drawing of that aircraft,
  • preliminary basic data,
  • the proposed operating characteristics and limitations.
-       An application for an engine or propeller type-certificate shall be accompanied by
  • a general arrangement drawing,
  • a description of the design features,
  • the operating characteristics, and the proposed operating limitations, of the engine, or propeller.
-       Design, compliance verification and independent checking team list (Panel based)
-       CVE and AS (if any) resumes
-       Application fee

Part And Appliance Certification

Verification of the parts and appliances to be installed on the products (aircraft, motor and propeller) meeting the relevant standards and/or specifications are referred to as part and appliance certification.
Compliance demonstration of the part and appliance to be installed on the type certified product shall be carried out as described below;
(a) the part and appliance to be installed on the product according to the type certification procedures described in SHT-21 Subparts B, D and E, or
(b) If applicable, the SHT-21 Subpart O in accordance with its TR-TSO authorization procedures or
(c) For standard parts, in accordance with officially accepted standards.
Officially accepted standards are standards issued by national (TSE) or international organizations (ISO, EN, ASTM, SAE, etc.).
For the demonstration of compliance with the above articles, the following methods should be followed;
  1. Refer to the Type Certification process for the component / appliance to be designed under (a).
  2. Organizations who wish to design parts and appliances within the scope of Article (b) must first come to our General Directorate and present the details about their projects and then fill in following forms and apply to our General Directorate. The certification specifications and references (if applicable) to international standards can be found in the CS-ETSO document.
Note: In order to obtain TR-TSO approval, it is obligatory to demonstrate the organization's design capability (A-DOA) and to have production organization approval (POA).
Application file content;
- Application Letter
- Application Fee
- SHGM Form 34 - TR-TSO Authorization Application Form
- SHGM Form 35 – Statement of Compliance for  TR-TSO Authorization
- SHGM Form 216 - SHT / Part-21 Checklist (completed by the Organization)
- Technical information about the part/appliance
- Contact person contact information
- Information on the relationship between A-DOA (DOA) / POA
Template file example;
- SHGM Form 153 - Example of A-DOA TSO Handbook
Within the scope of item (c), standard parts manufacturers do not need to obtain approval from our General Directorate. However, it should be tested and approved by national (TSE) or international organizations (ISO, EN, etc.).

Design Organisation Approval

Organisation must be demonstrated design capability for the design of the product, part and appliance and their design of the changes/repairs. There are two ways for this demonstration.
- Desing Organisation Approval (DOA) through the SHT-21; 21.A.14 (a), 21.A.112B (a), 21.A.432B (a) and 21.A.602B (b)
- Alternatif Procedure to Design Organisation Approval (ADOA) through the SHT-21; 21.A.14 (b,c), 21.A.112B (b,c), 21.A.432B (b,c) ve 21.A.602B (a)
Those who request to get DOA or ADOA must visit DGCA and present their project detail. Then, they must officially send filled forms which are given below to the DGCA for application.
Application folder content;
- Application Letter
- SHGM Form 80 or SHGM Form 81
- SHGM Form 82, when necessary
- SHGM Form 216, filled by organisation
- SHGM Form 218, filled by organisation
- Design Organisation Handbook (DOH) (SHGM Form 151 can be used)
- Focal points communication information
- Manager’s Form-4 documents
- Candidate CVE list and informaiton, when necessary

Modifications and Repairs (TCs, STCs and Repairs)

Any modifications or repairs to a product that has received a type certificate must be approved by the DGCA or design organizations (DOA or A-DOA) authorized by DGCA.
For major changes refer to;
- SHT-21 Subsection D, if carried out by Type Certificate holder,
- SHT-21 Subsection E, If carried out by an organization that does not have a Type Certificate, 
For minor modifications, any private person or organization may apply under Subpart D.
For repairs, refer to the SHT-21 Subdivision M.
Content of the application files (the following appropriate Forms are used according to the scope to be submitted);
- Application Letter
- SHGM Form 30 - Type Certificate Application Form
- SHGM Form 33 - STC Application Form
- SHGM Form 31 - Major Repair or Change Design Application Form
- SHGM Form 32 - Minor Change or Repair Application
- SHGM Form 81 - Alternative Procedure to DOA Application Form (ADOA)
- SHGM Form 82 – Significant Changes in Design Organization Application Form
- Change / Repair technical information
- Contact person contact information
- Application fee
Template file examples;
- SHGM Form 152 - Example of ADOA STC Handbook
- SHGM Form 154 - Example of ADOA Change-Repair Application File

Production Organisation Approval

The production organisation shall demonstrate its ability to produce products, parts and appliances to be used in aircraft. There are two ways of demonstration of ability:
-       SHT-21 Subpart F – Production Without Production Organisation Approval
-       SHT-21 Subpart G-  Production Organisation Approval for Products, Parts and Appliances
For production with POA or without POA:
-       hold or have applied for an approval of the design of products, parts and appliances or
-       have ensured, through an appropriate arrangement with the applicant for, or holder of, an approval of the design, satisfactory coordination between production and design.
The production organisation shall demonstrate that it has established a proper and efficent quality system and is able to maintain this quality system. It is recommended that organization have authority such as AS9100 etc.
Firstly, the organizations that would like to produce with POA or without POA have to give details about their projects in the General Directorate. Then, they shall apply to the General Directorate with the reference dossier containing the following forms and cover/formal letter.
Content of the reference dossier;
-       Application Letter
-       DGCA Form 50- Application for Part 21 production organisation approval or DGCA Form 60 -Application for agreement of production under Part 21 Subpart F
-       DGCA Form 51 Application for significant changes or variation of scope and terms of Part 21 POA  (suitable case)
-       DGCA Form 212- POA eligibility checklist
-       DGCA Form 213-  Part 21 Subpart G POA Compliance Checklist
-       DGCA Form 214-  Part 21 Subpart G Production Organisation Exposition Compliance Checklist
-       Informations of the contact person
-       Form 4 of Responsible Manager (if possible)
-       Production Organisation Exposition (POE)
-       The holder of the POA approval may:
  1. perform production activities under SHT-21;
  2. in the case of complete aircraft and upon presentation of a statement of conformity (EASA Form 52) under point 21.A.174, obtain an aircraft certificate of airworthiness and a noise certificate without further showing
  3. in the case of other products, parts or appliances, issue authorised release certificates (EASA Form 1) without further showing
  4. maintain a new aircraft that it has produced and issue a certificate of release to service (EASA Form 53) in respect of that maintenance
  5. under procedures agreed with its competent authority for production, for an aircraft it has produced and when the production organisation itself is controlling under its POA the configuration of the aircraft and is attesting conformity with the design conditions approved for the flight, to issue a permit to fly in accordance with point 21.A.711(c) including approval of the flight conditions in accordance with point 21.A.710(b)
Sample Forms;
-       DGCA Form1 – Authorised Released Certificate
-       DGCA Form 55a – Production Organisation Approval Certificate
-       DGCA Form 65-  Letter of Agreement
-       DGCA Form 136- Product Sample Form
-       DGCA Form 137- Arrangement Sample Form (Subpart F)
-       DGCA Form 138- Arrangement Sample Form (Subpart G)

Airworthiness Certificates

The following types of certificates are issued for the suitability of each aircraft registered or to be made to the Turkish Aircraft Register.

- Airworthiness Certificate and Airworthiness Review Certificate for aircraft covered by SHY-M
- National Airworthiness Certificate for aircraft with a type certificate issued / accepted by the General Directorate not covered by SHY-M
- Special Flight Permit Certificate and Approval of Flight Conditions for unmanned aerial vehicles and research, development, experimental and type certificate compliance.
Type Certificates accepted by the General Directorate are given below:
- Type certificates issued by the European Aviation Safety Agency (EASA)
- Type certificates issued by the Federal Office of American Aviation (FAA)
- Type certificates issued by the Brazilian Civil Aviation Authority (ANAC)
- Type certificates issued by the Canadian Civil Aviation Authority (TCAA)
- Type certificates issued by the civil aviation authorities of EASA member states and organizations authorized by those authorities.
- Type certificates issued by the civil aviation authorities of bilateral agreements
! The General Directorate sets special conditions when accepting type certificates. In this context, please refer to the “Type Validation / Acceptance” section for the first types of aircraft entering our country.

Noise Certificates

Each aircraft registered or to be registered in the Turkish Aircraft Register must have a noise certificate under Annex-16 Volume I issued by the International Civil Aviation Organization (ICAO).
The noise categories determined by ICAO are given below.
Subsonic jet aeroplanes —Application for Type Certificate submitted before 6 October 1977.
1. Subsonic jet aeroplanes — Application for Type Certificate submitted on or after 6 October 1977 and before 1 January 2006 

2. Propeller-driven aeroplanes over 8 618 kg— Application for Type Certificate submitted 
on or after 1 January 1985 and before 1 January 2006
1. Subsonic jet aeroplanes and propeller-driven aeroplanes with maximum certificated take-off mass 55 000 kg and over — Application for Type Certificate submitted on or after 1 January 2006
2. Subsonic jet aeroplanes with maximum certificated take-off mass less than 55 000 kg — Application for Type Certificate submitted on or after 1 January 2006

3. Propeller-driven aeroplanes over 8 618 kg — Application for Type Certificate submitted 
on or after 1 January 2006
Propeller-driven aeroplanes over 8 618 kg — Application for Type Certificate submitted 
before 1 January 1985
Propeller-driven aeroplanes not exceeding 8 618 kg — Application for Type Certificate 
submitted before 17 November 1988
Propeller-driven STOL aeroplanes
Installed auxiliary power units (APU) and associated aircraft systems during ground operations
Propeller-driven aeroplanes not exceeding 8 618 kg — Application for Type Certificate 
or certification of Derived Version submitted on or after 17 November 1988
Helicopters not exceeding 3 175 kg maximum certificated take-off mass
Supersonic aeroplanes
Tilt-rotor aircraft
The application for the Noise Certificate should include:
1- Application and SHGM Form 43 – Noise Certification Application Form
2- Related to new aircraft:
   a. Declaration of conformity
   b. For the imported aircraft, a declaration signed by the exporting authority confirming that the aircraft is in conformity with the design adopted by the General Directorate; and
   c. Noise information determined in accordance with applicable noise requirements.
3- Related to used aircraft:
   a. Noise information determined in accordance with applicable noise requirements and
   b. Historical records to determine Aircraft production, modification and maintenance standards.

Type Acceptance

DGCA determines the requirements which has been already registered or will be registered in the DGCA registration system. Type Certificate (TC) is issued or TC is validated/accepted in the framework of certification activies by DGCA.

TC’s are accepted given below.

1. TC’s are issued by European Union Safety Aviation Agency (EASA)

2. TC’s are issued by Federal Aviation Administration (FAA)

3. TC’s are issued by Brasilian Civil Aviation Authority (ANAC)

4. TC’s are issued by Canada Civil Aviation Authority (TCAA)

5. TC’s are issued by EASA Member’s Civil Aviation Authorities or organisations authorised by those members.

6. TC’s are issued by Civil Aviation Authority which signed Bilateral Agreement with that authority.


Type Acceptance is not performed by automaticly, required some documents and demonstrations. These documents and demonstrations shall be submitted to DGCA by the applicant via its own certifying authority before delivery of the product (aircraft, engine, propeller).

  • Approved TC and TCDS.
  • 3D Drawings, Type Definition document or equivalent document
  • Certification Compliance Checklist
  • Compliance to special conditions including novel or unusual design features
  • Engine emission information in the context of Annex 16 issued by ICAO
  • Approved Flight Manual (if applicable configuration deviation list, etc.)
  • Web Access Authorization for maintenance and operation documents (MPD, SB, IPC, MMEL, etc.)
  • Operating and installation manuals (for engine and propeller)
  • Familiarization Training for  DGCA personnel.(At least 20 trainees)


Familiarization Training should be comprised of;

  • Overview of fuselage, engine, electical and avionic systems,
  • Working principles of system components,
  • Safety issues,
  • Maintenance applications, test tools, etc.
  • Other subjects determined by the applicant.


After the reviewing of the documents and demonstrations, if DGCA finds it acceptable, Type Certificate Acceptance Document is issued to applicant and its own certifying authority by DGCA.

The procedure given above can be amended if the Bilateral Agreement allows different procedure.


Accepted type certificates by DGCA are given below in the framework of the prescribed procedure. The Aircrafts are accepted which have been already registered in the Registry System but the new type aircrafts which will be registered to the Registry System after the date 01.08.2016 must meet the requirements prescribed in the procedure.




Airbus S.A.S.

A320 - Neo


Airbus Helikopter



Airbus Helikopter



Textron Aviation

(Formerly Beechcraft)



Bombardier Aerospace

Learjet Model 45 (70-75)


Textron Aviation

(Formerly Cessna)

Cessna 200B


Textron Aviation

(Formerly Cessna)

Cessna 680A


Embraer S.A.



Pilatus Aircraft

PC-12 Series


Leonardo S.p.a

(Formerly Finmecanica)



Tecnam Quality Aircraft

P2008 JC


Turbomeca (Safran)

Arriel 2D


Turbomeca (Safran)

Arriel 2E


CFM International

Leap 1A


Rolls Royce

Model 250 C-47


Aquila Aviation GMBH



Safran Helicopter Engines ARRIUS 2R Engine
Aircraft Industries, a.s L 410 UVP-E20 Aeroplane
International Aero Engines PW1100G-JM / PW1400-JM Engine
Boeing  B 787-9 Aeroplane
Airbus S.A.S. A 350 (900 and 1000 series) Aeroplane
Tecnam Quality Aircraft P2010 Aeroplane

Bilateral Aviation Safety Agreements & Working Arrangements (BASA & WA)

The Directorate General of Civil Aviation (DGCA) cooperates with the foreign civil aviation authorities in order to increase the aviation safety, share experiences, and reciprocal acceptance of the products/certificates. In addition, the aforementioned agreements prevent the same transactions twice and also increase the reliability of the civil aviation of Turkey in the international arena. In this context, the agreements made by our General Directorate are given below:
Working Arrangements:

Memorandum of Understanding:

Bilateral Aviation Safety Agreements:
1- The negotiations with the American Federal Aviation Agency (FAA) are ongoing.
2- The negotiations with the Transport Canada Civil Aviation (TCCA) are ongoing.
3- The negotiations with the Civil Aviation Administration of China (CAAC) are ongoing.

Airworthiness Directives - ADs

Airworthiness Directives (ADs) are instructions to the type certificate holder and/or aircraft operators when aircraft, engines, avionics or another systems are in unsafe condition.
For each aircraft with a type certificate, issued airworthiness directives by the relevant civil aviation authority must be followed and implemented on time. Otherwise, flight of the aircraft is not allowed.
Besides, except for the foreign civil aviation authorities DGCA may issue its own airworthiness directives.