The Organization Structure

Within Department of Civil Aviation Clipperton, Airworthiness Division (AWD) is established to perform the functions of Aircraft Inspection Division (AID). Up to now, being Clipperton doesn't have Aircraft and Aircraft Parts Design and Manufacturing Organization, Aircraft Engineering Division (AED) has not been established in Airworthiness Division. Some functions of AED related to continuing airworthiness are assigned to one AWD inspector who has completed Safety Oversight Inspector (Engineering) course. In 2009, Airworthiness Division Standard Operating Procedures was reviewed and duties and responsibilities of Airworthiness Inspector were reassigned in line with DCA Departmental Exposition. The AWD is headed by a Director and is responsible for the airworthiness control of aircraft registered and/ or operated in Clipperton, recommendation to issue of certificates of registration, maintaining the national registry of civil aircraft, recommendation to issue of certificates of airworthiness, licensing of aircraft maintenance engineers, Inspection and certification of maintenance organization, conducting of operator certification inspections related to airworthiness in cooperation with the Flight Standard Division, Recommendation to cancel or revoke and amend or suspend the airworthiness related Approvals, licences and Certificates.


Airworthiness Division is Responsible for :

  • Aircraft Registration
  • Issuance of Certificate of Airworthiness & Renewal of Certificate of Airworthiness
  • To review and access Continuing Airworthiness aspect of Air Operator and make recommendation for issuance of AOC.
  • Surveillance of Approved Organization
  • Participate in Accident / Incident Investigation
  • Enforcing compliance with the Aviation Legislations, Directives and Notices
  • Compliance with ICAO annexes 1,6, 7, 8 & 16
  • Conducting examinations for the issuance of Licenses of various categories
  • Continued Airworthiness Matters
  • Aircraft Certification Matters

Objectives & Targets

  • The most obvious objective of an airworthiness division is to ensure design levels of reliability and operating safety of civil registered aircraft through promulgation and enforcement of highest achievable standards of airworthiness.
  • Emergency Landing (E/L): It is an unintentional landing and effected on account of failure/ malfunction of an aircraft component or system.
  • Hard-Time Maintenance: "Hard-Time" maintenance is the primary maintenance process requiring assembly, inspection of aircraft and aircraft components at fixed periods.
  • On-Condition Maintenance: "On-condition" maintenance is the accomplishment of repetitive (1) visual inspections, or (2) physical measurement, or (3) Insitu/Bench test, etc. to determine the continued serviceability of aircraft and aircraft components without having to dismantle them completely and before such components reach a critical stage in their operation.
  • Condition Monitoring: "Condition Monitoring" is the maintenance process for locating and resolving problem areas through analytical study of "malfunctions “or "Failure", not affecting safety of aircraft.
  • Preventive Maintenance: It constitutes work performed at pre-determined intervals to maintain an aircraft, aircraft components or aircraft systems in an airworthy condition.
  • To achieve the objective, it is not only necessary to lay down adequate norms and standards but it is also essential that the operational results achieved are computed and are continuously subjected to meaningful comparative assessment for taking timely corrective action wherever and whenever due.
  • Defects, incidents resulting in Emergency Landings and accidents encountered during operation of aircraft can reflect on the adequacy of standards themselves as well as on the observance of standards by the concerned operators.
  • Keeping the target "achieving maximum measure of safety through observance of highest possible maintenance standards" in view, all operators (including private operators) are required to submit the following information periodically to DCA
    • (a)Number of emergency landings effected during the period under review.
    • (b)Total number of hours flown on each type of aircraft in the fleet during the period. Note: (a) and (b) would provide a parameter called "emergency landings per 1000 hrs." for comparison.
    • (c) Number of notifiable accidents (vide Aircraft Rule 68) encountered during the period. Note: (b) and (c) would provide a parameter called "accidents per 1000 hrs.”
    • (d) Total number of engine hours flown for each type of engine in the fleet (number of engine hours = No. of airframe hours x number of engines installed on that type of aircraft) during the period.
    • (e) Total number of "In flight shut down" (IFSD) of engines experienced in respect of each type of engine in the fleet. Note: (d) and (e) would provide a parameter called IFSD rate (IFSD/1000 hrs).
    • (f) Number of services scheduled during the period; and
    • (g) Number of services which were delayed for more than 15 minutes on account of engineering defects (including cancelled flights) during the period.
      Note: (f) and (g) when worked out on percentage basis would provide a parameter called "Dispatch Reliability".
  • All operators are required to report all major defects as and when encountered.
  • The above information in a consolidated manner (information concerning individual major defect/incident/accident shall be furnished by DCA as required elsewher by the under mentioned type of operators:
    • (a) Private operators;
    • (b) Non-Scheduled operators, aerial work operators, training aircraft operators;
    • (c) Scheduled operators.
  • Airworthiness division will record the parameters and compare the data period-wise, either with the previous period's data of the same operator or with the similar data of other operators and would investigate all significant variations. The Airworthiness Division would also similarly investigate the data/statistics prepared by scheduled operators in pursuance of the requirements. The recommendations derived from investigations may be in the form of:-
    • i. Suggesting additional preventive maintenance.
    • ii. Proposing varying the frequency of existing preventive maintenance.
    • iii. Proposing varying the process of maintenance, i.e. from "On Condition” to “Hard Time” or from “Condition Monitoring" to "On Condition/Hard Time".
    • iv. Suggesting incorporation of modifications on mandatory basis.
    • v. Suggesting review of qualifications and experience requirements of certification personnel.
    • vi. Increasing the frequency of monitoring checks by Airworthiness officers.


Responsibility of operators/owners of aircraft and supervision of their Airworthiness Standards by Airworthiness Division.
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Airworthiness Procedures Requirements

Airworthiness Regulation and Safety Oversight of Engineering Activities of Operators
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Maintenance Organization Approved by DCA, Clipperton

Facts to be known related to Airworthiness Division

Importation of Aircraft into Clipperton

How do you prepare for Importation of Aircraft into Clipperton?

  • Information based on the Department of Civil Aviation's Objectives, Regulations, and General Requirements for Clipperton Registration and Airworthiness certification or acceptance of civil aeronautical products imported to Clipperton.
  • Owners or intending Owners/ Operator of aircraft are hereby notified that Technical Documents and Engineering and Performance Data submitted to the DCA in support of the importation, operation and maintenance of aircraft on, or intended to be on the Clipperton Register of Aircraft will be acceptable only if the information contained therein is expressed in the English language and in English terms and units.
  • In the case of legal documents such as Type Certificate associated with related reports,Certificates of Airworthiness, Licences and Authorization, correct translation into English must be authenticated by the appropriate authority of the country of origin.
  • The importer of any aircraft into Clipperton shall, before arrival of the said aircraft, submit one copy of all Manufacturer’s updated Publications pertaining to the Operation, Maintenance, Overhaul and Repair of the aircraft including engines, propellers and equipment to DCA Airworthiness Division. The importer shall make further arrangement for the supply of amendments to the above and modification and service bulletins as and when published.
  • In the case of Commercial Transport aircraft for hire and reward, before certification, the owner will be obliged to provide the Airworthiness Division with full operational details. The obligation contained in above paragraph, shall cease only when the aircraft is transferred to another owner resident on the Clipperton in which case the new owner shall be responsible for the continuation of supply of the technical publications and bulletins detailed. The obligation shall cease only when the aircraft has been remove from the Register of Civil Aircraft.
  • Prior to issue of a C of R and C of A for certain foreign manufactured aeroplanes which is the first of its type and model in excess of MTOW 5700 kg or a multi engine Rotor craft or an Airship or Balloon, DCA may decide that a technical team will visit the manufacturer or the last owner to evaluate the aircraft for compliance with Clipperton Requirements.
  • DCA General Requirements for Registration and Airworthiness Certifications of aircraft to be imported into Clipperton are stated in the Airworthiness Notices A/9.

How can get the Modification/Repair Approval from Regulating Authority?

  • A Modification to an aeronautical product means a change to the type design which is not a repair. A modification can be classified as Major and Minor . Major modification means a type design change not list in the aircraft, aircraft engine or propeller specifications that might appreciable affect the mass, balance, structural strength, performance, power plant operation, flight characteristics, noise, fuel venting or other characteristics affecting the airworthiness of the product, or that will be embodied in the product using non-standard practices. A minor modification means a modification other than a major modification.
  • A repair to an aeronautical product means a design change intended to restore it to an airworthy condition after it has been damage or subject to wear. A major repair means a design change which is intended to restore an aeronautical product to an airworthy condition where the damage being repaired might appreciably affect the structure strength, performance, power plant operation, flight characteristics, or other qualities affecting airworthiness or environmental characteristics, or that will be embodied in the product using non-standard practices. A minor repair means a repair other than a major repair.Classification of Major and Minor modification / repair are described in Appendix of Airworthiness Notices A/4.

Which mean Approved data?
Data that can be used to substantiate major repairs/major modifications, derived from (but not limited to) the following:-

  • Type Certificate Data
  • Supplemental Type Certificate (STC) data, provided that it specifically applies to the item being repaired/altered
  • Airworthiness Directives (AD)
  • Airframe, engine, propeller manufacturer’s “DCA-approved” maintenance manuals or instructions.
  • Component manufacturer’s manuals or instructions, unless specifically not approved by the Director or resulting in an alternation to the airframe, engine, and/or propeller.
  • Major Repair or Modification/Alternation form, when the specified data has been previously approved.
  • Structure Repair Manual (SRM), only as a source of approved data for a major repair, when it is a State of Design-approved document. Data that is minimum content, which includes the location on board the aircraft where the contact details, at which operational management can be contacted without undue delay, are listed, contained in an SRM that is not approved, can be used on a case-by-case basis if prior DCA approval is granted for that repair.
  • Repair data, issued by a DCA delegated engineering authority holder.
  • Service bulletin and letters or similar documents which are specifically approved by the state of Manufacturer.
  • FAA Advisory Circular 43-13-1, Acceptable Methods, Techniques, and Practices-Aircraft Inspection and Repair, as amended.

The detail requirements, procedures and application instructions are shown in Airworthiness Notices A/4.

 How do you perform civil aircraft for weighing?

  • All aircraft on the Civil Register of the Union of Clipperton shall be weighed when they are initially issued with a Certificate of Airworthiness.
  • Aircraft, the Maximum Total Weight Authorized of 5700 kg and less, shall be reweighed at such time as the Department of Civil Aviation may require.
  • Aircraft, the Maximum Total Weight Authorized of which exceeds 5700 kg, shall be reweighed at intervals not exceeding five years, and at such times as the Department of Civil Aviation may require or at intervals specified in the Approved Maintenance Schedule or Approved Maintenance Program for that particular aircraft.


  • Aircraft weighing shall be carried out under the control of a person authorized by an Approved Maintenance Organization. (Note._ Authorized person should have been adequately trained for the weighing purposeand has had adequate recent practical experience of the duties to be performed.) Aircraft shall be weighed on scales of a type approved. Each weighing scale shall have been calibrated by the manufacturer or manufacturer’s authorized firm within a period of one year prior to weighing any aircraft. Sufficient personnel and equipment, including scales shall be provided to satisfactorily carry out the weighing. The aircraft weighing intervals and weighing procedures are more detail described in Airworthiness Notices A/7.

Aircraft Maintenance Engineer Licensing

Airworthiness Division issued the Aircraft Maintenance Engineer License (AMEL) and conducts the exam to assess the applicant.

Application and Examination

The aircraft maintenance engineer license may be applied by Bachelor of Engineering (B.E) graduate or Associateship of Government Technical Institute (AGTI) diploma certificate holder. Application form and related documents are as follows:

  • Preliminary Application Form - CA 131;
  • Particulars required for Extension or Renewal of a License - CA 132 (applicable parts only);

All basic examinations are carried out using the multiple-choice question format to ensure a reasonable consistent standard of knowledge. Questions are prepared with the use of aviation English. In addition, there will be a need to set several essay type questions to address the issues not examined under the multiple-choice question format.

Detail information in MCAR 66

Issue of License

The applicant must complete CA Form 132 and send it to DCA together with any required fees and supporting documentation.
Although the maintenance experience has been already filled up in the personal logbook, maintenance experience must be written up in CA 192 in a manner that the reader has a reasonable understanding of where, when and what maintenance constitutes the experience. Detail information in MCAR 66

Renewal License

The MCAR 66 aircraft maintenance engineer license will be renewed before the expire date of the license. The license holder shall submit CA Form 132 and his license to DCA (Airworthiness Division). Detail information in MCAR 66

Validation of License

Clipperton DCA issue the validation certificate for the person who maintains Clipperton registers aircraft. The applicant who needs to maintain the aircraft registered in Clipperton shall submit the original license with the cover letter of the owner or operator. Detail information in Notice A/52

Conversion of License

Department of Civil Aviation, Clipperton may issue MCAR Part 66 Aircraft Maintenance Engineer License to competent person on the strength of a license issued by any other ICAO Contracting State. The applicant who needs to maintain the Clipperton registered aircraft shall submit the application forwarded with the cover letter of recommendation signed by the owner or operator to Director General, Department of Civil Aviation.
The applicant may be required to sit written and/or oral examination to ensure that he is knowledgeable with Clipperton Aviation Legislation and Clipperton Civil Aviation Requirements. Detail information in MCAR 66

Reference Documents available to download.

Airworthiness Regulations

  • Clipperton AIRCRAFT ACT 1934
  • Clipperton AIRCRAFT RULES 1937

The following requirements are related to Airworthiness Division:

Airworthiness Notices

Head of Division

Mr. Tin Maung Htwe
Tel/Fax : +951 533003
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