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STANDARD CERTIFICATE OF AIRWORTHINESS. Cooperative Development of Operational Safety & Continuing Airworthiness. OBJECTIVE. This chapter provides guidance and information relating to the issue of standard Certificates of Airworthiness (CoAs) in particular categories. BACKGROUND.

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STANDARD CERTIFICATE

OF AIRWORTHINESS

Cooperative Development of Operational

Safety & Continuing Airworthiness


Objective
OBJECTIVE

  • This chapter provides guidance and information relating to the issue of standard Certificates of Airworthiness (CoAs) in particular categories


Background
BACKGROUND

  • The obligation for Contracting States of ICAO, to issue CoAs, is laid down in Part II, Section 3 of ICAO Annex 8, “Airworthiness of Aircraft”. A CoA may be issued on the basis of satisfactory evidence that an individual aircraft complies with the appropriate airworthiness requirements, and that the aircraft has been constructed and assembled satisfactorily.


Background1
BACKGROUND

  • CoAs are issued for individual aircraft as one of the preconditions to the aircraft being able to fly legally, in the sense of being fit to fly.

  • Actual aircraft type approval stops at the issue of the Type Certificate.


Background2
BACKGROUND

  • The C of A issue process involves ensuring that:(a) the aircraft conforms with the type design; this in turn ensures that the aircraft meets:

    • a design standard; and

    • the specified airworthiness requirements;

      (b) the aircraft is free from defects;(c) the required modifications, have been embodied;(d) the required operational equipment has been fitted;(e) the aircraft’s airworthiness state is properly reflected in the required documentation .


Standard certificates of airworthiness
STANDARD CERTIFICATES OF AIRWORTHINESS

  • A standard CoA may be issued in the following categories:· Transport· Normal· Utility· Acrobatic· Commuter· Manned free balloons


Standard certificates of airworthiness1
STANDARD CERTIFICATES OF AIRWORTHINESS

  • Standard CoAs are only issued to aircraft which meet prescribed airworthiness standards e.g. Part 23 (a design standard for small aircraft); Part 25 (a design standard for transport category aircraft) or, a one-off standard, prescribed and published by the Authority for special classes of aircraft.

  • Special CoAs or special flight permits cover all other cases.


Other basic prerequisites
OTHER BASIC PREREQUISITES

  • As well as the aircraft being registered and appropriately marked, in accordance with the regulations, there are two other basic prerequisites for issue of a standard CoA:(a) the aircraft must have been type certificated;(b) many states require that a fireproof plate is secured to the aircraft.

VH-ABC

B727-138

Ser. No.12237


The application form
THE APPLICATION FORM

The form details should include:(a) registration mark,(b) manufacturer,serial number,model: as it appears on the aircraft identification plate or in the aircraft’s flight manual, and/or the type certificate data sheet. (c) place and year of construction: from identification plate or log books

(d) aircraft location and maintenance organisation: enter aircraft location and/or where the aircraft is to be processed for CoA


The application form1
THE APPLICATION FORM

(e) category requested, noting:

  • (i)a standard CoA can be issued in more than one category

  • (ii)two CoAs (for example, one to cover standard CoA category operation, and one to cover restricted category operation) may be issued for the one aircraft.

  • (iii) an application for issue of the special CoA must be made at this time.

  • (iv) that if a standard CoA in the special class category is being requested, then the class is entered e.g. airship, etc;

    (h) C of R holder details: enter the specific details as required.


Aircraft sources
AIRCRAFT SOURCES

  • The relevant variables are:(a) whether the aircraft is locally or foreign manufactured;(b) whether the aircraft has been operated locally or is being imported;(c) whether the aircraft is new or used;(d) whether the aircraft is a first-of- type/model.

    (e) the age of the aircraft;(f) the modification status of the aircraft.


Type approval
TYPE APPROVAL

APPROVAL PROCESS

  • A CoA cannot be issued to an aircraft that does not hold a type approval from this state

  • If an aircraft is one of a type manufactured in this state, type certification data should already be held within the Authority.

  • If an aircraft of foreign manufacture has been approved for operation in this state, then it will have already been issued with some form of Type Certificate.


Type approval1
TYPE APPROVAL

APPROVAL PROCESS

  • Some states automatically issue a Type Acceptance Certificate (TAC) for an aircraft type that has a current Type Certificate issued to it by one or more recognised overseas authorities.

  • If a type acceptance certificate cannot, or has not been issued, then a full design validation must be undertaken by the Authority BEFORE a C of A can be issued.


Imported aircraft
IMPORTED AIRCRAFT

  • It is desirable for an application for a standard CoA for aircraft being imported into this state to be supported by a foreign export CoA or equivalent document (as discussed in more detail later in this chapter), and that local format logbooks and other documentation have been raised


Used aircraft
USED AIRCRAFT

  • Used aircraft obviously have a “history” of operation, and some data in regard to this will be required


First of type definition
FIRST-OF-TYPE, DEFINITION

“TYPE” means a design and make of aircraft and refers to a group of essentially similar aircraft which, although possibly existing in different models or variants, stem

from a common

basic design

and are

certificated under

the same type

certificate;


First of model definition
FIRST-OF-MODEL, DEFINITION

  • “MODEL’ means a particular version of an aircraft type, such as would be distinguished from another version of the same type by a change of sufficient effect on the weight and balance, structural strength, operational characteristics, or other characteristics as would require a separate entry on the type certificate identifying and approving the particular version as distinct from the identification and approval of other models.


Ground inspection report
GROUND INSPECTION REPORT

  • the Authority may produce a Ground Inspection Report (GIR), based on the CoA issue exercise for a First of Type (FOT) or First of Model (FOM) aircraft.

  • Any condition identified during the ground inspection will be included as a condition on the CoA for all aircraft of this type and model.


Age and modification status
AGE AND MODIFICATION STATUS

Old aircraft and those incorporating major modifications

usually incur

some extra time

and effort in

terms of

documentary

requirements, as discussed on the following slides.


Supply of data all aircraft
SUPPLY OF DATA All aircraft

The following data should be made available at the time of application:

  • the Certificate of Registration

  • evidence that the particular aircraft complies with the type design;

  • the logbooks or equivalent maintenance records for the aircraft;

  • the current weight and balance report

  • a copy of the Aircraft Flight Manual.


Supply of data used aircraft
SUPPLY OF DATA Used aircraft

  • total hours and flights/landings of the aircraft/engines and all life limited components;

  • statement describing the past operational uses of the aircraft;

  • record of all major structural and life-limited component changes such as those of wings, rotor blades, tailplanes etc., and the individual histories;

  • record of all major structural repairs.


Supply of data aged aircraft
SUPPLY OF DATAaged aircraft:

  • Special requirements may be imposed where the aircraft are older than 14 years:

  • details regarding previous operators of the aircraft and where operated, and details of all structural repairs to the aircraft not carried out in accordance with the manufacturer’s approved data; and

  • a copy of the relevant Structural Inspection Document.


Supply of data imported aircraft
SUPPLY OF DATAimported aircraft:

One of the following documents should be supplied:

  • a current export CoA for export to this state, or current CoA., or

  • a written statement from the aircraft manufacturer, or from a maintenance organisation, that all applicable ADs, have been complied with, and that the aircraft conforms to Type Certificate requirements.


Supply of data modified aircraft
SUPPLY OF DATA modified aircraft:

  • For aircraft incorporating major modifications:

  • written evidence that the modifications were incorporated in accordance with approved data

    • manufacturer’s data approved by a recognised authority; or

    • data approved by a recognised authority in the country of manufacture


The aircraft inspection
THE AIRCRAFT INSPECTION

  • The physical inspection involves the completion of detailed checklists, and encompasses:(a)inspection of structure, systems and engines, to verify the aircraft is in a safe condition for flight, and to correlate physical aspects with the aircraft’s documentation;(b) checking the correctness of registration markings and fireproof plate;


The aircraft inspection1
THE AIRCRAFT INSPECTION

(c) correlation of aircraft data plate details with documentation;(d) checking all placards as called up by the AFM, MM or ADs;(e) ensuring the role equipment is correctly installed; and(f) operational equipment as required by the aircraft’s intended role e.g. instrumentation, communication and navigation equipment, oxygen provisions, survival equipment etc. is correctly installed.


The aircraft inspection2
THE AIRCRAFT INSPECTION

Non conformance

  • Formal non-compliance documents are not raised. Non-compliances may be pursued in different ways:

  • rectified before the CoA can be issued;

  • the applicant accepting operational restrictions

  • transferred to the flight and technical log as deferred defects.


Test flight
TEST FLIGHT

  • Some overseas regulatory authorities require a test flight as a routine part of the CoA issue procedure,or

  • the need for some particular form of check test flight may arise during the course of the CoA


Multiple airworthiness certification
MULTIPLE AIRWORTHINESS CERTIFICATION

  • All the requirements for multiple category operation should be checked during the CoA inspection, as well as ensuring the conversion from one category to the other by removing or adding equipment (as applicable) can be undertaken using simple mechanical means.

  • This sub-process will be completed when the Special CoA in the restricted category is issued concurrently with the standard CoA .A similar process applies for other multiple airworthiness certifications.


Conditions applied to a c of a
CONDITIONS APPLIED TO A C of A

  • The Authority is permitted to place any condition on the issue of a CoA considered necessary in the interests of aviation safety. This may include operational limitations.

  • Any condition will be in writing attached to the CoA.

  • The AWI should fully discuss all proposed CoA conditions with the applicant prior to issue of the CoA. The aircraft must be subsequently operated and/or maintained under the terms of the CoA conditions.


Status of the certificate of airworthiness
STATUS OF THE CERTIFICATE OF AIRWORTHINESS

  • DurationSome states do not require that standard CoAs be renewed on a periodic basis, although the CoA can be issued for a specific period. However the prevailing philosophy is to ensure ongoing airworthiness of aircraft through prescribed maintenance requirements, surveillance and other continuing airworthiness controls.


Transfer
TRANSFER

  • A CoA is transferred with the aircraft as the CoA is issued to the particular aircraft. Thus the CoR holder may change, but this does not invalidate the CoA. However, a CoA ceases to be in force if the aircraft ceases to be registered in this state.


Cancellation suspension
CANCELLATION/SUSPENSION

  • The Authority has the power to suspend or cancel a CoA by notice in writing to the holder of the CoA in the interests of safety. Such action can be taken if maintenance on the aircraft is not carried out in accordance with the CARs, and/or, in the case of RPT aircraft, if type certification support, in the sense of continuing airworthiness obligations, ceases from an overseas source.

  • If a CoA has been cancelled through the above action, or after an aircraft ceases to be on the Register, then a new CoA will be required.


Variation surrender
VARIATION & SURRENDER

  • If a condition on a CoA is to be varied by the Authority, then the CoA should be re-issued.

  • If a CoA stops being in force, expires or is suspended or cancelled, the holder of the CoA must surrender it to the Authority, on written request from the Authority.


Overseas issue of a c of a
OVERSEAS ISSUE OF A C. of A.

  • The ‘Authority’ may not issue a CoA overseas, for the following reasons:(a) diversion of limited Authority resources for the additional travel time involved;(b) the administration of tasks normally carried out by persons whose qualification privileges do not extend to work carried outside of this state e.g. the issue of a MR;(c) the degree of preparation prior to departure, necessary for the CoA documentation;(d) the management and administrative tasks associated with overseas travel


Supplemental type certificates
SUPPLEMENTAL TYPE CERTIFICATES

An STC formally identifies a major modification normally carried out on an aircraft by a party other than

the type certificate holder, and

is supported by an approved

data package.


Supplemental type certificates1
SUPPLEMENTAL TYPE CERTIFICATES

  • A STC incorporated into an aircraft for which CoA issue is required will fall into one of three groups:

    • an STC of local design, approved by the Authority;

    • a foreign STC which has been previously accepted by the Authority; or issued by an authority of a recognised country and automatically accepted;

    • STCs which have not been approved or accepted by the Authority as per (a) and (b) above


Supplemental type certificates2
SUPPLEMENTAL TYPE CERTIFICATES

  • An STC must be applicable to the particular aircraft by serial number and be in accordance with the Type Certificate or TAC certification basis.

  • In the case of an STC that has not been approved by the local authority, it will be the responsibility of the applicant to furnish to the Authority the design data package for the STC, so that the Authority may carry out a design validation. The package required, consisting of drawings, test reports, flight manual supplement, is that lodged by the STC holder to the regulatory authority which issued the STC.


Noise certification
NOISE CERTIFICATION

  • Noise certification for individual aircraft is required before the aircraft can legally be operated in some countries. Aircraft noise limits may be regulated. Noise certification or lack of such has no legal impact on type approval, or individual CoA issue. However, if an individual aircraft does not meet the noise requirements, then it may be illegal for that aircraft to operate in some countries, even though the aircraft may have a valid CoA.


Maintenance release
Maintenance release

  • A maintenance release is not issued prior to CoA issue. However, an aircraft operating on a standard CoA cannot legally fly until a maintenance release has been issued


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