Turbine Aeroplane Aerodynamics, Structures and Systems

for category A and subcategories B1.2 and B1.4:

3 years of practical maintenance experience on operating aircraft if the applicant has no previous relevant technical training; or

2 years of practical maintenance experience on operating aircraft and completion of training considered relevant by the Authority as a skilled worker in a technical trade; or

1 year of practical maintenance experience on operating aircraft and completion of a SAR-147 approved basic training course.

Type/task training and ratings

The holder of a category A aircraft maintenance licence may only exercise certification privileges on a specific aircraft type following the satisfactory completion of the relevant category A aircraft task training carried out by an appropriately approved SAR-145 or SAR-147 organisation. The training shall include theoretical training and practical hands-on training as appropriate for each task authorised. Satisfactory completion of training shall be demonstrated by an examination and/or by workplace assessment carried out by an appropriately approved SAR-145 or SAR-147 organisation

The aircraft maintenance licence holder shall inform the Authority of any change in the particulars which will affect the information contained in the licence.

The aircraft maintenance licence holder shall apply to the Authority to renew his licence within the 3-month period before the date of expiry of the licence

An aircraft maintenance licence will be renewed provided the applicant is not suffering from any disability likely to adversely affect his or her technical skill or judgment.

Failure to renew the aircraft maintenance licence shall invalidate any certification authorisation issued on the basis of such aircraft maintenance licence and may require recent aircraft maintenance experience and/or the re-sit of some examinations before re-issue of the licence. The Authority will decide for each particular case.

Certifying staff qualified in accordance with this SAR-66 may be issued with an aircraft maintenance licence by the Authority as evidence of one of the qualifications necessary for the grant of a SAR-145 certification authorisation. Certifying staff must be able to produce their licence if requested by an authorised person within a reasonable time.

The Authority may exempt any person, required to be qualified in accordance with SAR-66, from any requirement in SAR-66 when satisfied that a situation exists not covered by SAR-66 and subject to compliance with any supplementary condition(s) the Authority considers necessary to ensure equivalent safety.

Certifying staff must not exercise the privileges of their certification authorisation if they know or suspect that their physical or mental condition renders them unfit to exercise such privileges.

The Authority may, on reasonable grounds after due enquiry, revoke, suspend or limit the aircraft maintenance licence or direct the SAR-145 approved maintenance organisation to revoke, suspend or limit the SAR-145 certification authorisation if the Authority is not satisfied that the holder of the licence and

Foreign Type Certificate: Procedural & Airworthiness Requirements

Variant Type Certificate Application: Subpart A

Singapore product changes: Subpart C or agreed procedures.

Create, keep, and revise manuals as per SAR-21.315 standards.

Update manuals to reflect changes introduced by the supplemental type certificate.

STC applicant needs revised airworthiness instructions per SAR-21.315.

STC applicant distributes revised airworthiness instructions to all operators.

Prove product compliance with SAR-21.315 design standards

STC holder needs DGCA approval for major part changes.

Minor changes in STC-covered part by STC holder don't need DGCA approval.

STC transfer allowed to compliant organization with DGCA approval.

Outlines requirements in paragraphs 8 and 17A of the Air Navigation Order (ANO)

Standards of aircraft noise, CO2 emission and engine emission

DGCA may grant STSO if requirements met, possibly with conditions.

have DGCA-accepted arrangement for STSO design configuration control.

Major STSO design changes require new SAR-21.455 application.

Mark STSO articles as DGCA-approved following SAR-21.1020(j).

Comply with DGCA-approved data for major repairs (SAR-21.117), or minor repairs (DGCA/Holder's approval or SAR-21.117 acceptance).

OR needs DGCA-approved arrangement for repair design control demonstration.

Subpart specifies DGCA's repair design Approval requirements.

DGCA grants repair design Approval if requirements met, with conditions if needed.

Repair design Approval holder follows Subsection VI & Subpart rules.

DOA maintains design-production collaboration for product integrity.

DOA offers airworthiness instructions, if needed.

Requirements for DGCA approval and continuation outlined in Section 1.

1.2 Section 2 includes AMC and IEM to assist applicants in compliance.

DGCA-issued ACs may contain additional AMC and/or IEM.

If no AMC, IEM, or AC is provided for a SAR paragraph, it's deemed not to require supplementary material.

AMC and IEM displayed on full-page width, identified by issue/change number.

Numbering matches SAR paragraphs, preceded by AMC or IEM.

Explanatory notes, not in AMC/IEM, appear in smaller typeface.

Appendices include sample application forms; obtain the latest editions from CAAS directly or its website.

This SAR-145 prescribes the requirements for issuing approvals to organisations for the maintenance of:

(1) Singapore aircraft and aircraft components intended for fitment on a Singapore aircraft under paragraph 8A(1) of the ANO; or

(2) Foreign aircraft and aircraft components intended for fitment on a foreign aircraft under paragraph 8B(1) of the ANO or, if the maintenance is performed in accordance with an international maintenance agreement between the DGCA and another state’s authority.

The SAR-145 was first issued in January 1996. Amendment 1 was issued in September 2000. Amendment 2 issued on 1 July 2003 became effective on 1 January 2004. Amendment 3 became effective on 1 April 2004. Amendment 4 became effective on 4 June 2004. Amendment 5 became effective on 15 August 2006. Amendment 6 became effective on 17 Jul 2008. Amendment 7 became effective on 1 January 2009. Amendment 8 became effective on 19 March 2010. Amendment 9 was issued on and became effective on 15 July 2010. Amendment 10 was issued on and became effective on 18 June 2011. Amendment 11 was issued on and became effective on 5 October 2012. Amendment 12 was issued on and became effective on 6 September 2013. Amendment 13 was issued on and became effective on 1 March 2017. Amendment 14 was issued on and became effective on 1 June

2018. Amendment 15 was issued on and became effective on 5 October 2018. Amendment 16 was issued on and became effective on 1 November 2018. Amendment 17 was issued on and became effective on 5 November 2020.

Pursuant to paragraph 17A of the Air
Navigation Order, the Director General of Civil Aviation (DGCA) has issued this SAR-145 that prescribes the requirements for the approval of a maintenance organisation. The issue of a maintenance organisation approval shall be dependent upon the organisation demonstrating compliance with the requirements of the SAR-145 and all other applicable requirements published by the DGCA.

An application for maintenance organisation approval or for the amendment of an existing maintenance organisation approval shall be made in a form and manner prescribed by the DGCA and submitted with the required number of copies of the maintenance organisation’s exposition or amendment thereto.

The grant of approval is indicated by the issue of a certificate of approval to the organisation by the Authority. The certificate of approval will specify the extent of approval. The SAR-145 approved maintenance organisation’s exposition must specify the scope of work deemed to constitute approval.

The SAR-145 approved maintenance organisation shall display the certificate in a prominent place within the organisation’s premises and shall produce the certificate to the DGCA upon request.

Facilities appropriate for all planned work, ensuring in particular, protection from the weather elements must be provided. Specialised workshops and bays must be segregated as appropriate, to ensure that environmental and work area contamination is unlikely to occur.

A senior person or group of persons acceptable to the DGCA, whose
responsibilities include ensuring that the SAR145 approved maintenance organisation is in compliance with SAR-145 requirements, must be nominated. Such person(s) must be directly responsible to the accountable manager who must be acceptable to the DGCA.

In addition to the appropriate SAR-145.30(f) and (g) sub-paragraph(s), the SAR-145 approved maintenance organisation must ensure that certifying staff receive Human Factors training and have an adequate understanding of the relevant aircraft and/or aircraft component(s) to be maintained, together with the associated organisation procedures before the issue or re-issue of the SAR-145 certification authorisation. Relevant aircraft and/or aircraft component(s) means

those aircraft and/or aircraft component(s) specified in the particular SAR-145 certification authorisation.

The SAR-145 approved maintenance organisation must have the necessary equipment, tools and material to perform the approved scope of work.

The SAR-145 approved maintenance organisation must hold and use applicable current maintenance data in the performance of maintenance including modifications and repairs. Applicable means relevant to any aircraft, aircraft component or process specified in the SAR-145 approved maintenance organisation’s approval class rating schedule and any associated capability list.

Except where stated otherwise in subparagraphs (d), (e) and (f) a certificate of release to service must be issued by appropriately authorised certifying staff on behalf of the SAR-145 approved maintenance organisation when satisfied that all maintenance required by the customer of the aircraft or aircraft component has been properly carried out by the SAR-145 approved maintenance organisation in accordance with the procedures specified in the SAR-145.70 maintenance organisation exposition taking

into account the availability and use of the maintenance data specified in SAR-145.45.

Note: An aircraft component which has been maintained off the aircraft requires the issue of a certificate of release to service for such maintenance and another certificate of release to service in regard to being installed properly on the aircraft when such action occurs.

The SAR-145 approved maintenance organisation must record all details of work carried out in a form acceptable to the DGCA.

The SAR-145 approved maintenance organisation must report to the DGCA and the aircraft type certificate holder any condition of the aircraft or aircraft component identified by the SAR-145 approved maintenance organisation that could seriously hazard the aircraft.

The SAR-145 approved maintenance organization (except Sub-part D organisations) must establish a safety management system, acceptable to the DGCA, that commensurates with its size and the complexity of its aviation products or services.

The SAR-145 approved maintenance organisation must establish a quality policy for the organisation to be included in the SAR145.70 maintenance organisation exposition.

A statement signed by the accountable manager confirming that the maintenance organisation exposition and any referenced associated manuals define the organisation’s compliance with SAR-145 and will be complied with at all times. When the accountable manager is not the chief executive officer of the SAR-145 approved maintenance organisation then such chief executive officer must countersign the statement.

Maintain any aircraft or aircraft component for which it is approved at the locations identified in the certificate of approval and/or in the SAR-145 approved maintenance organisation exposition.

The SAR-145 approved maintenance organisation may 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.

The SAR-145 approved maintenance organisation must notify the DGCA of any proposal to carry out any of the following changes, at least 3 weeks before such changes take place, to enable the DGCA to determine continued compliance with this SAR-145 and to amend, if necessary, the certificate of approval, except that in the case of proposed changes in personnel not known to the management beforehand, these changes must be notified at the earliest opportunity.

The DGCA may exempt a SAR-145 approved maintenance organisation from a requirement in this SAR-145 when satisfied that a situation exists not envisaged by a SAR-145 requirement and subject to compliance with any supplementary condition(s) that the DGCA considers necessary to ensure equivalent safety.