Subpart C - Inspection Requirements

39.61 Maintenance programme

(a) Aircraft granted a certificate of airworthiness under the requirements of OTAR Part 21 Subpart E shall be maintained in accordance with a maintenance programme approved by the Governor.

(b) The maintenance programme and any amendments require approval by the Governor for each aircraft, and shall include details of the maintenance of the aircraft, engines, propellers, rotors, appliances and emergency equipment items.

(c) The maintenance programme shall reference the required inspection standards, practices and procedures that shall be at least equivalent to the Type Certificate holder’s scheduled maintenance requirements.

(d) Any schedule of inspections/tests required by any approved programme amendment shall be introduced in a controlled manner to ensure the continued airworthiness of the aircraft.

(e) Consideration shall be given to human performance within the maintenance programme including the format of the maintenance programme document, maintenance task breakdown and combined maintenance tasking, particularly safety critical tasks which shall be identified in the maintenance programme.

(f) The maintenance programme shall readily identify any certification inspection tasks and other significant continued airworthiness inspection tasks that are the subject of specific control and mandated by the applicable State of Type Certification, as referred to in OTAR Part 21.19(a), such as but not limited to:

(1) Supplemental Structural Inspection Document;

(2) Fuel Tank Safety Inspections;

(3) Ageing Aircraft;

(4) Widespread Fatigue Damage;

(5) Electrical Wiring Interconnection Systems (EWIS).

(g) Each maintenance programme approval holder shall make any revisions to the maintenance programme as required by the Governor and any applicable mandatory amendments promulgated by the Type Certificate holder or its NAA to satisfy the continuing airworthiness requirements for the aircraft.

(h) The maintenance programme including any amendments shall be produced in the English language, be readily available and shall contain within it:

(1) an explanation of the programme, including the continuity of inspection responsibility, procedures for making any required reports and technical reference material; and

(2) instructions and procedures for the implementation of inspection tasks for the particular aircraft type, taking account of the aircraft modification status and any repairs that have associated instructions for continued airworthiness; and

(3) an inspection schedule for performing the inspections required by the programme expressed in terms of the total time in service, cycles, calendar time, number of system operations, or any combination of these; and

(4) for a progressive inspection programme, an inspection schedule that provides for the complete inspection of the aircraft within each 12 month period or is consistent with:

(i) the manufacturer’s recommendations; and

(ii) the operator’s service experience; and

(iii) the type of operation in which the aircraft is engaged; and

(iv) the utilisation of the aircraft in terms of hours and cycles or a combination thereof.

(5) instructions, taking account of detailed technical justification, for altering and gaining approval for a change of inspection intervals or a maintenance process because of service experience; and

(6) instructions for varying an inspection interval under exceptional circumstances taking account of overriding mandatory requirements and maintenance programme inspection requirements referred to in paragraphs 39.61(e) and (f); and

(7) sample inspection forms, reports and instructions for their use; and

(8) procedures for maintenance trend analysis if the programme utilises condition monitored maintenance or information derived from health and usage monitoring systems; and

(9) inspection requirements required for approved special operations; and

(10) instructions for continued airworthiness including inspection and analysis of any installed Flight Data Recorder (FDR) and/or Cockpit Voice Recorder (CVR) in accordance with instructions from the Type Certificate holder. If the Type Certificate holder has not provided specific requirements, the limitations specified in ICAO Annex 6 Part I, II, or III, as applicable shall prevail; and

(11) a list of definitions and acronyms used.

39.63 Maintenance programme approval

(a) Each applicant for the approval of a maintenance programme shall apply to the Governor for approval.

(b) The application for approval of the maintenance programme shall contain, or references shall be made to, the following information:

(1) the name and address of the owner or lessee or the holder of an air operator’s certificate; and

(2) the maintenance status of the aircraft prior to the commencement of the programme; and

(3) the means of introducing the programme; and

(4) technical justification relating to the anticipated utilisation of the aircraft, inspection intervals and procedures for inspection task management; and

(5) a copy of the maintenance programme either in hard copy or electronic format in a manner acceptable to the Governor; and

(6) copies of any other supporting documents, such as condition monitored maintenance activities, structural integrity programmes, engine off-wing maintenance programmes, fuel tank safety inspection programmes; and

(7) the aircraft designation, serial number and registration mark for each aircraft that is subject to the programme; and

(8) any further particulars relating to the programme and applicant as may be required by the Governor.

39.65 Condition monitored and reliability maintenance programmes

(a) Where the manufacturer of aircraft, engines and propellers prescribe MSG-3 logic, condition monitoring, or health and usage monitoring systems these shall form part of the maintenance programme approved by the Governor under paragraph 39.63.

(b) Appropriate procedures acceptable to the Governor shall be established for any applicable condition monitoring or reliability or health and usage monitoring systems referred to in paragraph 39.65(a).

(c) Where data gathering is required, the following shall form the basis of an acceptable programme:

(1) aircraft utilisation; and

(2) pilot reports; and

(3) aircraft mechanical delays and cancellations; and

(4) unscheduled engine shutdowns; and

(5) unscheduled engine removals; and

(6) unscheduled component removals; and

(7) confirmed component failures; and

(8) occurrences.

39.67 Airworthiness Directives applicability

(a) Except as provided for in paragraph 39.67(b), the airworthiness directives applicable under this Part are those airworthiness directives or equivalent mandatory continued airworthiness requirements:

(1) prescribed for that aircraft or product by the State of type certification on which Type Acceptance Certification rests; and

(2) any prescribed by the state of certification of an applicable approved design change.

(b) Compliance with alternative or additional airworthiness directives may be required as a condition of issue or continuity of the Type Acceptance Certificate.

39.69 Airworthiness Directives compliance

An aircraft shall not be released to service unless for each applicable airworthiness directive:

(a) compliance can be demonstrated with the specified compliance criteria; or

(b) an alternative means of compliance has been approved under paragraph 39.71.

39.70 Continued airworthiness improvements

An aircraft holding a Certificate of Airworthiness granted in the Territory shall comply with the special conditions of Type Acceptance referred to in OTAR Part 21.19(a) for any additional requirements of continued airworthiness.

39.71 Alternative means of compliance with mandatory continued airworthiness requirements

An alternative means of compliance may be proposed for the Governor’s approval provided that the regulatory authority of the Contracting State that issued the original requirement has accepted the alternative compliance proposal.


Floor 2, The Portland Building, 25 High Street
Crawley, West Sussex RH10 1BG,
United Kingdom