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Singapore Air Worthiness Requirements, Compliance, Issuance, Amendments -…
Singapore Air Worthiness Requirements
SAR 147(Javier)
Sub Part B - organisation requirements
instructional equipment
Use of appropriate presentation equipment which also includes
representative synthetic training devices
Basic training workshop & maintenance facilities
Must have all tools and equipment for the approved scope of training
Appropriate selection of aircraft, engines, aircraft parts and avionic
equipment
records of instructors, examiners and assessors
Must keep records of instructors, examiners and assessors in area of experience, training history and subsequent training
• Must draw up Terms of Reference and be provided for
maintenance training material
Maintenance training course must be provided to student covering
Basic knowledge syllabus specified in SAR-66
Basic knowledge syllabus for certifying staff in SAR-145 AMO
holding Class C rating.
Type course content as required by SAR-66
personnel requirements
• MTO must appoint an accountable manager who has corporate authority for all training commitments to be financed and carried out per SAR
• Accountable manager must appoint a senior person for monitoring the internal quality assurance
• MTO must ensure it employs or contracts sufficient qualified staff
• Practical training is contracted out, the subcontractor may conduct the assessments
• Any person may perform multiple roles such as instructors, assessors and examiners provided they received instructional technique training as instructors.
• MTO must-have program for staff to update their knowledge once every 24 months
records
Record Keeping
To keep all student training, examination and assessment record
for 5 years following the completion of the student’s course.
Course records for 5 years following the cessation of the course.
facility requirements
Must be separated from other facilities
The MTOE and other relevant documents shall specify the maximum class size for knowledge training and the procedures implemented to guarantee successful training. DGCA permission is required.
Exam classes must make sure that no student is able to view another student's paperwork or computer screen while they are being examined.
The facility needs to offer a quiet, comfortable space where students may focus on their studies and exams.
Facility must be protected from prevailing weather
The workshop and/or maintenance facility needs to be kept apart from the classroom for the basic training session.
For type/task training must have access to facilities containing the aircraft type being taught.
If this isn't possible, plans can be made with another group to provide these workshops and/or maintenance facilities; in that instance, a formal agreement with that group outlining the terms of access and use of those facilities must be created.
Must have a library containing relevant technical materials
Accommodation for instructors, assessors, examiners and secure storage for exam paper & training records
Maximum of students doing practical training is 16 per assessor
training procedures and internal quality assurance system
Establish procedure to ensure
proper training & examination and compliance to SAR-147
Established a Quality System as follows:
Independent audit ( once every 12 months)
Feedback system of audit findings, timely implementation
of Corrective & Preventive Action
For small MTO,
Independent audit may be contracted to another SAR-147
MTO or competent person approved by DGCA.
Audit to be conducted 2 times within a 12-month period,
with one audit being unannounced.
Sub Part C - the approved basic training course
basic knowledge examination•
• For SAR-145 AMO Class C rating workshop certifying staff, knowledge examination must be according to established procedures, without training notes and cover a representative cross section of subject
• This exam is not similar to SAR-66 basic knowledge examination
basic practical assessment
At the end of each visit period to the workshop or maintenance facility, appointed practical assessors must conduct basic practical assessment.
the approved basic training course
Basic Knowledge Examinations held by MTO is deemed as
preparatory examinations and is not equivalent nor it replaces
the Basic Knowledge Examinations conducted by Authority
A training hour is 60 minutes of training without pause
Each license category basic course may be divided into
modules or sub-modules and intermixed with practical training
subject to the required hours
Sub Part A - general
definitions
Definitions for Accountable Manager under SAR147, Assessors, Examiners, Instructors and
Quality System
applicability
training and examination as specified in SAR-66
training and examination for qualifying certifying staff of SAR-145 organisations holding Class C ratings.
effectivity
replaces the SAR Chapter 6.7 effective
1st January 2006
application and issue
Application form is CAAS(AW) 21T
Fees – refer to ANO Twelfth Schedule, Para 6B
general
specifies guidelines for organizations seeking approval as a Maintenance Training Organization (MTO).
Sub Part D - aircraft type/task training
aircraft type/task training
Each type/task course must be approved by Authority before conducting unless it is already been agreed through a procedure in the MTO Exposition
MTO in compliance with the standard specified in SAR-66 may be approved to carry out SAR-66 aircraft type/task training
A minimum 85% attendance is required for completion of course
An aircraft type/task training may be sub-divided to
• Airframe – all aircraft structure and electrical and mechanical system excluding powerplants.
• Power plant – bare engine including build-up to a quick engine change unit
• Avionics/Electrical Systems – include but not necessary limited to ATA Chapters 22, 23, 24, 25, 27, 31, 33, 34, 42, 44, 45, 46, 73 & 77
A SAR147 MTO may be approved to conduct airframe type training only, powerplant type training only or avionics/electrical system type training only
aircraft type examination and task assessment
Aircraft type assessment and task assessment to be conducted per SAR-66 but subjected to compliance to the standard specified in SAR-66
SAR 39 (Jovis)
ACCEPTABLE MEANS OF COMPLIANCE (AMC) AND INTERPRETATIVE/EXPLANATORY MATERIAL (IEM)
Presentation
A numbering system has been used in which the Acceptable Means of Compliance and Interpretative Material uses the same number as the paragraph in SAR to which it refers. The number is preceded by the letters AMC or IEM to distinguish the material from the SAR itself.
The acronyms AMC and IEM also indicate the nature of the material and for this purpose the two types of material are defined as follows:
Acceptable Means of Compliance (AMC) illustrate a means, or several alternative means, but not necessarily the only possible means by which a requirement can be met. It should however, be noted that where a new AMC is developed, any such AMC (which may be additional to an existing AMC) may be amended into the document or issued as a separate Advisory Circular.
Interpretative/Explanatory Material (IEM) helps to illustrate the meaning of a requirement.
The Acceptable Means of Compliance and Interpretative/Explanatory Material are presented in full-page width on loose pages, each page being identified by the date of issue or the change number under which it is amended or re-issued.
Explanatory notes not forming part of the AMC text appear in a smaller typeface.
General
Where a particular SAR paragraph does not have an Acceptable Means of Compliance or any Interpretative/Explanatory Material, it is considered that no supplementary material is required.
In addition, Advisory Circulars issued by the Authority may contain further Acceptable Means of Compliance and/or Interpretative/Explanatory Material.
This section contains Acceptable Means of Compliance (AMC) and Interpretative/Explanatory Material (IEM) that has been included in the SAR-39 to provide clarifications on compliance with the SAR-39 requirements.
SAR 145 (Khayri)
General
No aircraft may fly unless a certificate of release to service has been issued by an organisation for maintenance carried out on the aircraft or an aircraft component intended for fitment to such an aircraft.
No organisation may certify for release to service an aircraft unless approved in accordance with SAR-145 or accepted in accordance with SAR-145.10(d).
Definitions
SAR-145 certification authorisation
- authorisation issued to certifying staff by the approved maintenance organisation and which specifies the fact that they may sign SAR-145.50 certificate of release to service within the limitation stated in such authorisation on behalf of the SAR145 maintenance organisation.
Applicability
prescribes the general operating rules for approved maintenance organisations.
prescribes requirements for issuing approvals to organisations
for the maintenance of
Singapore aircraft and aircraft components intended for fitment on a Singapore aircraft;
Foreign aircraft and aircraft components intended for fitment on a foreign aircraft
Personnel Requirements
must have a maintenance manhour plan to show they have sufficient staff
competence of personnel involved in maintenance an quality audits must be established and controlled in accordance with a procedure and to a standard acceptable to the DGCA
personnel who carry out NDT of aircraft structures or components are appropriately qualified for the particular NDT in accordance with SAR
The SAR-145 approved maintenance organisation may authorise the holder of a SAR 66 license in Category B1 to carry out colour contrast dye penetrant test
prescribes the standards which an MRO company will need to achieve and maintain, in order to carry out maintenance work on a Singapore registered aircraft, or components to be fitted on a Singapore registered aircraft.
Maintenance Records
must record all details of work carried out in a form acceptable to the DGCA
must retain a cope of all detailed maintenance records and any associated maintenance data for 2 years
Limitations on the approved maintenance organization
only maintain an aircraft or aircraft component for which it is approved when all necessary facilities, equipment, tooling, material, maintenance data and certifying staff are available
Shall only use aircraft components acceptable to the DGCA
SAR 66
Basic Examination
Basic Examination Standard
Related Regulation
Basic Knowledge Requirement
Levels of understanding in each category
lvl.1
Familiar with the basic elements of the subject
Give simple description of subject, using common words and examples
Utilize typical terms
lvl.2
Understand the theoretical fundamentals
Give general description of the subject with examples
Use mathematics and physics
Comprehend subject's schemes
Apply knowledge practically in detail
lvl.3
Know subject theory and interrelation to other subjects
Give detailed description of subject using theoretical fundamentals and examples
Understand and use math formulae
Comprehend and prepare own subject schemes
Apply knowledge practically under manufacturer's instructions
Interpret results from various sources and apply corrective action appropriately
Module Categories
Meet Either Category B Levels
Cat. C
B1 Cat. Knowledge
B2 Cat. Knowledge
Common Module in Cat. A & B
Cat. A
A & B1 shared module
Turbine Aeroplane Aerodynamics, Structures and Systems
Piston Aeroplane Aerodynamics, Structures and Systems
Helicopter Aerodynamics, Structures and Systems
Gas Turbine Engine
Piston Engine
Propeller
Mathematics
Physics
Electrical Fundamentals
Electronic Fundamentals
Essay Examination
Digital Techniques
Material & hardware
Maintenance Practices
Aerodynamics
Human Factors
Aviation Legislation
Cat. B
B2
Aircraft Aerodynamics, Structures and Systems
2 part modules
Propulsion
B1
AML Examination Module
Examination Standard
SAR 21 (Izzul)
Section 1: Requirement
General
DGCA (Directorate General of Civil Aviation Authority) needs to be assured that such accountable manager has direct access to the CEO and has sufficient authority and resources allocated to ensure compliance with this part when accountable manager is not the CEO
Design Approval
Type Certificates
Applicabilty
Any person or organization may apply for letter of acceptance of type certificate. Preferable for aircraft manufacturer or type certificate holders to apply since their support in the acceptance
Acceptabilty of foreign type certificates
For a Competent Authority of a Contracting State that does not have bilateral agreement or working agreement with CAAS covering the acceptance of a type certificate, the DGCA will determine the extent of the validation programme. This will be decided on a case by case basis.
Application
An application for a letter of acceptance of type certificate should be made on Form CAAS(AW)204
which is available from CAAS.
The data should include, as applicable
(a) copy of the aircraft and engine type certificate and the type certificate data sheets or
specifications for the aircraft, engine or propeller;
(b) the applicable airworthiness design standards and the effective date of the standards;
(c) any special conditions imposed under the foreign type certification;
(d) any requirements not complied with and any compensating factors providing an equivalent level of safety
(e) any airworthiness limitations;
(f) a list identifying the data submitted for the issue of the foreign type certificate, showing
compliance with the applicable airworthiness design standards;
(g) a copy of the approved Airplane Flight Manual;
(h) a copy of the instructions for continued airworthiness;
(i) the illustrated parts catalogue;
(j) all current service information issued by the manufacturers of the aircraft, aircraft engine and
propeller including any Airworthiness Directives.
(k) a proposed schedule for aircraft and engine training, such as familiarisation training or type
training, for Authority’s officers;
(l) noise certificate;
(m) Maintenance Review Board Report;
(n) Maintenance Planning Data Document; and
(o) a list of accidents or major incidents that the aircraft had been involved in.
The applicant is required to bear the costs of inspections, testing or evaluations carried out by an authorised person as part of the process of granting a letter of type certificate acceptance in accordance with the Twelfth Schedule of the ANO. The intial review of the application is expected to take approximately 3 hours and this payment should be included with the application. Any additional costs incurred, including further man hour costs, will be invoiced to the applicant.
Acceptance of type certificate
issued by FAA
Singapore has a Bilateral Aviation Safety Agreement (BASA) with the USA. The DGCA will therefore accept a type certificate issued by the FAA where the USA is the State of Design. An applicant will need to submit an application for a letter of acceptance of type certificate under SAR-21.110. All the required data should be provided to the DGCA before a FAA type certificate can be accepted. The DGCA may carry out a familiarization exercise prior to acceptance if required.
issued by EASA
Under the ambit of Working Arrangement on Airworthiness Certification (WA-AC) between CAAS and EASA, the DGCA will accept a type certificate issued by EASA on behalf of a European Union Member State where the European Union Member State is a State of Design. An applicant will need to submit an application for a letter of acceptance of type certificate under SAR-21.110. All the required data should be provided to the DGCA before an EASA type certificate can be accepted. The DGCA may carry out a familiarisation exercise prior to acceptance if required.
Airworthiness Design Standard
Products
Airworthiness design standards issued by the DGCA are:
(a) airworthiness design standards contained in regulations issued by the Federal Aviation Administration (FAA) of the United States of America, including Title 14 Code of Federal Regulations (CFR) Parts 23, 25, 27, 29, 33 and 35; or
(b) airworthiness design standards issued by the EASA, including EASA Certification Specifications (CS) 23, 25, 27, 29, -E and - P.
Special conditions
The DGCA may specify special conditions for a product to establish a level of safety equivalent to the airworthiness design standards specified in SAR-21.755 if the DGCA determines that the airworthiness design standards do not contain adequate or appropriate safety levels for the product, because the product has novel or unusual design features relative to the design practices on which the applicable design standards are based or the intended use of the product is unconventional.
The minimum performance standards STSO aricles are:
(a) standards issued by the DGCA for STSO approval
(b) standards established by the FAA for TSO approval
(c) standards established by the EASA for ETSO authorisation.
Changes to Type Certificate
Application
A foreign Airworthiness Directive that is mandatory in accordance with SAR-39 may be incorporated without further approval by the DGCA.
Any other major change to a Singapore product may only be made with the approval of the DGCA through the supplemental type certificate procedures under Subpart C, unless the procedures are stated in an agreement between the Authority and the Competent Authority that issued the type certificate.
Refer to revision 3 (or later revisions) of AC 21-1 “Approval requirements for modifications and repairs” for post-certification design changes for EASA or FAA type certificated products that have been issued with a CAAS letter of type acceptance.
Not withstanding item 3 above, CAAS may conduct conformity and compliance checks on the installation on a Singapore product. A Singapore product refers to a Singapore registered aircraft and includes the engine and/or propeller installed or going to be installed on the aircraft.
Supplemental Type Certificates
Showing of compliance
The applicant should submit all data to the DGCA for review and approval. If the data is modified or updated during the course of the project, the applicant should immediately contact the DGCA and establish a time frame within when the change(s) will be submitted to the DGCA.
Tests plan need approval by the DGCA prior to any tests being carried out.
The applicant should arrange for the DGCA's participation in conformity and compliance inspections and witnessing of all certification testing to the approved test plans. It may be necessary to carry out inspections to verify that the descriptive data conforms and complies with the applicable airworthiness design standards. The applicant should ensure that suitable access is provided for these inspections at appropriate points during the project.
The applicant should submit test reports and substantiating data for all certification testing, as well as any further data necessary to demonstrate compliance with the applicable airworthiness design standards.
Ground tests such as Electromagnetic Interference (EMI), fuel flow, structural, etc. may be necessary when the installation is complete.
The DGCA may require flight tests for changes which could affect the aircraft’s performance, flight characteristics, powerplant operation, and/or overall handling qualities. Changes to systems, equipment, instrumentation, and flight manuals may also require flight tests. Any change which may affect the navigation of the aircraft (including performance changes) will usually require fight testing.
Record keeping
The technical data file for each supplemental type certificate should include both descriptive and compliance data. Descriptive data defines the design of the change to the product, while compliance data substantiates that the design meets the applicable airworthiness design standards.
Transferablity
Transfer within Singapore
A supplemental type certificate may be transferred subject to the agreement of the DGCA. The supplemental type certificate holder should inform the DGCA in writing in advance of the intended transfer to allow the DGCA to carry out any necessary investigation of the proposed new holder. When the DGCA is satisfied that the proposed new holder will be able to comply with the requirements of this Part the existing supplemental type certificate holder should surrender its certificate to the DGCA and transfer the technical data file to the new holder. The DGCA will issue an amended supplemental type certificate to reflect the details of the new holder.
Transfer form a foreign holder to a SIngapore applicant
When a supplemental type certificate issued by another authority is transferred from a foreign holder to a Singapore applicant, the DGCA assumes the State of Design responsibilities. The Singapore applicant must be able to comply with the requirements of this Part and the supplemental type certificate must comply with the applicability requirements of SAR-21.300. A complete copy of the technical data file should be part of the transfer package and a copy submitted to the DGCA. The DGCA will review the transfer package and, if it is found acceptable to the DGCA, the DGCA will issue a supplemental type certificate to the Singapore applicant.
Transfer from a Singapore holder to a foreign applicant
When a supplemental type certificate issued by the authority is transferred from a Singapore holder to a foreign applicant, the DGCA’s State of Design responsibilities are transferred as well. The DGCA will suspend the supplemental type certificate at the same time as the foreign Authority issues a new certificate. The DGCA may reissue an amended supplemental type certificate to reflect the new details if required.
Designation of applicable airworthiness design standards
The applicable airworthiness design standards should be based on the type certificate of the product accepted under Subpart A unless otherwise agreed with the DGCA.
An applicant for the grant of a supplemental type certificate is expected to comply with the applicable airworthiness design standards in effect at the date of application. However, it is possible to revert to airworthiness design standards in effect at the date of type certification where the applicant can justify a reversion to the original type certification basis. A justification should be made for each requirement as to why it would not contribute materially to the level of safety of the changed product or would be impractical.
If the change introduces novel or unusual design features which are not adequately addressed by the applicable airworthiness design standards, the DGCA may prescribe special conditions to establish an appropriate level of safety for those features. These special conditions will be documented in an Issue Paper.
STSO Certificate Approval
When an applicant has demonstrated compliance with the applicable requirements of this Subpart to the satisfaction of the DGCA, the DGCA may, subject to such conditions that the DGCA deems necessary, grant to the applicant a STSO Certificate of Approval. In addition to complying with the requirements of this Subpart, a holder of a STSO Certificate of Approval shall comply with Subsection VI of this Part.
Design changes to STSO Certificate articles
A holder of a STSO Certificate of Approval for an article may make minor design changes to the article without obtaining further approval from the DGCA provided the holder:
(a) retains the basic model number of the article;
(b) identifies any design change by a model number suffix or part number change;
(c) forwards to the DGCA any revised data that is necessary to identify the design change and show continued compliance with the applicable STSO.
Repairs
Repair deisgn approval
The DGCA will grant a repair design Approval when it is satisfied that in respect of the design;
(a) the design drawings, specifications, reports, analysis, etc. are adequate to establish that the design complies with the applicable airworthiness requirements.
(b) any tests or inspections required by the DGCA have been completed satisfactorily.
(c) the drawings and other documents which define the installation are of a satisfactory standard and are comprehensive enough to ensure that the repair can be installed by a maintenance organization without additional instructions.
2 The DGCA may carry out a conformity check on the installed repair before final approval. The applicant should ensure that suitable access to the repaired area is provided for such checks.
3 A repair design Approval is deemed to be granted when Form CAAS(AW)206 has been signed by the DGCA.
Design changes to approved repairs
A design change to a repair of a product or article covered by a repair design Approval shall require a new application under SAR-21.505.
Record keeping
The 'life of the repair' means the length of time that the required product or article remains in service.
Design Organization Approval (DOA)
Requirement to hold a DOA
A holder of any of the following approvals shall obtain DOA unless the DGCA determines otherwise:
(a) type certificate;
(b) supplemental type certificate;
(c) Aproval for a modification or repair;
(d) STSO Certificate of Approval for an article.
Continued airworthiness
A holder of a DOA shall establish procedures appropriate to the designs being used for production for the provision of instructions for continued airworthiness (which should include maintenance information, inclusive of information on standard repairs). The instructions and any changes to the instructions should be available to any person required to comply with those instructions. They should be comprehensive enough to assure that required maintenance actions can be completed by maintenance organizations without additional instructions.
Production Approval
Production Organization Approval (POA)
Requirement to hold a POA
Organisations producing articles in Singapore which are subject to oversight by CAAS through a technical arrangement with a foreign aviation authority under a Bilateral Aviation Safety Agreement or a Memorandum of Understanding must hold a POA.
Relationship between production and design
A Holder of a POA must hold the right to produce products or articles to the approved design data by either:
(a) being the owner of the approved design; or
(b) having an arrangement with the design approval holder that is current and satisfies the requirements of this Subpart. Acceptable arrangements include production under licence and produce to print.
Production w/o POA
Application for and grant of a letter of agreement
An applicant may apply for a letter of agreement for limited production without holding a POA. An applicant must be able to satisfy the DGCA that each product or article will be produced satisfactorily without a POA. When an applicant has demonstrated compliance with the applicable requirements of this Subpart to the satisfaction of the Authority, the Authority may, subject to such conditions that the Authority deems necessary, grant to the applicant the letter of agreement.
Approval & Certificate Management
Approval holder requirements
In service support
A holder of an Approval granted under this Part should establish procedures to collect, investigate and analyse information relating to problems that develop when the designs it produces go into service.
Failure, malfunction and defect reporting
A holder of an Approval granted under this Part must report to the DGCA any failure, malfunction or defect in any article that has left its quality control system and could result in the safety level of aircraft operation being compromised.
Investigation of reported occurrences
When an occurrence reported in 21.1505(c) results from a deficiency in the design or a production deficiency, the holder of the Approval shall investigate the reason for the deficiency and report to the DGCA the results of its investigation and any action it is taking or proposes to take to correct that deficiency. The investigation should establish the full extent of the problem.
Corrective action
The corrective action taken by the Approval holder may include the publication of a Service Bulletin or the recall of the deficient or defective article. If the DGCA finds it necessary to mandate the corrective action, it may do so by issuing an Airworthiness Directive under SAR 39.
Duration of Approvals and Certificates
An organisation Approval (DOA or POA) is usually valid for a period of one year from the date of issue unless the Authority determines there are special circumstances that dictate a shorter time. Approval holders need to reapply using form CAAS(AW)21B in advance of the expiry date to maintain continuity of approval. Applications should be made one month before the Approval expires. If applications are received by the DGCA less than one month before expiry, then continuity of approval cannot be guaranteed. All other Approvals are valid until surrendered, superseded, suspended or revoked.
Section 2: AMC/IEM
14 Appendices
Compliance
No person shall operate or permit the operation of a Singapore aircraft to which an Airworthiness Directive applies, unless that person ensures that the aircraft complies with:
each applicable Airworthiness Directive issued in accordance with SAR-39.10 by the compliance time specified in the Airworthiness Directive
an alternative means of compliance approved under SAR-39.30 for each applicable Airworthiness Directive.
no person shall operate or permit the operation of a Singapore aircraft unless that person ensures that the aircraft or any component installed on that aircraft complies with:
any applicable foreign airworthiness directive issued by the relevant authority of the State of Design or the State of Design of Modification by the compliance time specified in the applicable foreign airworthiness directive
an alternative means of compliance approved under SAR-39.30 for each of the applicable foreign airworthiness directive.
the Authority may issue an Airworthiness Directive referencing a particular foreign airworthiness directive, in which case the Airworthiness Directive will take precedence over the foreign airworthiness directive.
the Authority shall be notified of the results arising from compliance of foreign airworthiness directives.
Issuance
an unsafe condition exists in any aircraft or aircraft component
that condition is likely to exist or develop in any other aircraft or aircraft component of the same design.
Amendments
REQUIREMENTS
Cancellation
The Authority may cancel an Airworthiness Directive when the Authority is satisfied that the grounds required by SAR-39.10 for the issue of the Airworthiness Directive no longer exist.
Definitions
‘Foreign airworthiness directive’ means an airworthiness directive which mandates actions to be performed to restore an acceptable level of safety for aircraft.
‘State of Design of Modification’ means the State having jurisdiction over the individual or organization responsible for the design of the modification or repair of an aircraft, engine or propeller.
‘Airworthiness Directive’ means a document issued which mandates actions to be performed to restore an acceptable level of safety for aircraft.
Effectivity
Amendment 3 became effective on 3 November 2022.
Amendment 2 became effective on 8 August 2017.
Amendment 1 became effective on 15 December 2006.
This SAR-39 became effective on 15 November 2003.
General
SAR-39 prescribes the Airworthiness Directives that are applicable to Singapore aircraft and any aircraft component to be fitted on Singapore aircraft.
Alternative Means of Compliance
An applicant for the approval of an alternative means of compliance to that specified in an Airworthiness Directive or a foreign airworthiness directive shall submit a request to the Authority containing at least the following information:
the make, model, and serial number of the aircraft or aircraft component to which the Airworthiness Directive or foreign airworthiness directive applies
in the case of an aircraft to which an Airworthiness Directive or a foreign airworthiness directive applies, its registration markings
the identification of the Airworthiness Directive or foreign airworthiness directive for which the alternative means of compliance is sought
the name and address of the applicant
such further particulars as the Authority may require relating to the aircraft or aircraft component, or the approval of an alternative means of compliance.
substantiating data to demonstrate that a level of safety equivalent to that of the Airworthiness Directive or foreign airworthiness directive, as the case may be, can be achieved by the proposed alternative means of compliance
The Authority may approve an alternative means of compliance if the Authority is satisfied that the alternative means of compliance provides an equivalent level of safety to that achieved through compliance with the requirements in the Airworthiness Directive or foreign airworthiness directive.
The Authority may issue an amendment to an Airworthiness Directive in accordance with SAR-39.5 and will identify the amendment by a suffix to the original Airworthiness Directive number.