Civil Aviation Order 100.28 Instrument 2007

Administered by Department of Infrastructure, Transport, Regional Development, Communications, Sport and the Arts

Legislation au F2007L04661 In force Legislative Instrument

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as amended

made under regulation 33B of the Civil Aviation Regulations 1988.

This compilation was prepared on 23 September 2013 taking into account amendments up to Civil Aviation Order 100.28 Amendment Instrument 2013 (No. 1).

Prepared by the Legislative Drafting Section, Legal Branch, Legal Services Division, Civil Aviation Safety Authority, Canberra.

Contents

Page

1 Name of instrument

2 Commencement

3 New Civil Aviation Order 100.28

Schedule 1 Civil Aviation Order 100.28.................................1

1 Requirements for issue

2 Application for authority

3 Examination

4 Re-examination

5 Issue of authority

6 Period of validity

7 Renewal of authority

Appendix 1............................................................3

Notes to Civil Aviation Order 100.28 Instrument 2007

1 Name of instrument

This instrument is the Civil Aviation Order 100.28 Instrument 2007.

2 Commencement

This instrument commences on the day after it is registered.

3 New Civil Aviation Order 100.28

Civil Aviation Order 100.28 is repealed and a new Civil Aviation Order 100.28 substituted as set out in Schedule 1.

Schedule 1 Civil Aviation Order 100.28

Aircraft weight control authority

This Civil Aviation Order is to be read in conjunction with Civil Aviation Order 100.23.

1 Requirements for issue

1.1 An applicant for an authority issued under this Civil Aviation Order must submit satisfactory evidence that:

(a) he or she has been adequately trained for the purpose; and

(b) he or she has had adequate recent practical experience of the duties to be performed in relation to the authority; and

1.2 An applicant for the issue of an authority is taken to meet the requirements of subparagraph 1.1 (a) if the applicant:

(a) has completed a tertiary qualification in a relevant engineering discipline; and

(b) is eligible for Graduate Membership of Engineers Australia in the Professional Engineer occupational category.

2 Application for authority

2.1 Application for the issue or extension of an aircraft weight control authority must be made to CASA on Form 377.

3 Examination

3.1 An applicant will be examined in accordance with the syllabus specified in Appendix I of this Order.

3.2 A candidate must achieve a minimum mark of 75% to pass the examination, except that where a candidate fails to satisfactorily answer particular questions specified in the question paper, the candidate will be failed irrespective of the total marks achieved.

Note Examination results will be notified direct to the candidate by CASA.

4 Re-examination

4.1 An applicant who fails an examination may be permitted to attempt the written examination again. The Director reserves the right to determine a minimum period prior to the applicant’s further examination and, where considered necessary, require evidence that the applicant has received additional training of a nature acceptable to the Director.

5 Issue of authority

5.1 An aircraft weight control authority will be issued to an applicant who has complied with the requirements of this Order.

5.2 The Director may issue an authority endorsed with such limitations as he considers necessary.

6 Period of validity

6.1 An aircraft weight control authority is valid for a period of 2 years.

7 Renewal of authority

7.1 Application for the renewal of an aircraft weight control authority must be made on Form 359, and an authority issued without further examination, provided the holder produces acceptable evidence that he or she has maintained proficiency and familiarity with the methods of aircraft weight control applicable to the authority held.

Appendix I

Syllabus for aircraft weight control authority

1 General

1.1 Documents — Relevant Civil Aviation Orders; Aircraft Weighing Summary; Flight Manuals; Load Data Sheets; Loading Systems; Certificates of Airworthiness; Aircraft Manufacturer’s data relative to weight control and preparation of aircraft for weighing; Record of Alterations.

1.2 Weight Control Officer — responsibilities and privileges — preparation and approval of loading data — procedure for amendment of flight manual loading information.

1.3 Terms — datum; empty weight, operating weight, maximum take-off weight, ramp weight, maximum landing weight, zero fuel weight; specific gravity; loading system; fixed equipment, removable equipment; centre of gravity, centre of gravity limits; mean aerodynamic chord; unusable fuel and oil.

1.4 Principles and purpose of weight control; periodic reweighing of aircraft.

1.5 The Principle of Moments — arm; moment; moment index; constant.

1.6 Conversion Factors — Imperial to SI units, for length and mass; Imperial and USA to SI units, for liquid volume.

2 Equipment and control

2.1 Plumb-bobs and levels — uses and serviceability checks.

2.2 Scales — types; accuracy, repeatability and calibration requirements; precautions during transport and operation.

2.3 Preparation of aircraft — jacking and slinging, fuel tank draining procedure and fire precautions; equipment lists.

2.4 Consecutive and independent weighing requirements; permissible discrepancies between weighings, factors that affect accuracy of weighing.

3 Weight and balance calculations

3.1 Basic principles of calculations involving plus and minus quantities.

3.2 Empty weight — method of determination; typical deductions and additions; standard weights for engine fuel, oil, passengers and crew.

3.3 Moment index — calculations for weights fore and aft of datum.

3.4 Empty weight c.g. — method of determination; conversion of c.g. position expressed in distance from datum, to a percentage of M.A.C. and vice versa.

3.5 Compilation of Aircraft Weighing Summary and Load Data Sheet.

4 Weight and balance extreme conditions

4.1 Determination of weight and balance extreme conditions.

4.2 Loading System — cockpit and compartment placards; loading graphs and tables for disposable load; allowable weight — moment, or weight-centre of gravity graphs and tables; floor plans.

4.3 Uses of fixed and disposable ballast.

5 Weight control in service

5.1 Record of Alterations form — purpose; compilation.

5.2 Reweighing requirements.

Notes to Civil Aviation Order 100.28 Instrument 2007

Note 1

The Civil Aviation Order 100.28 Instrument 2007 (in force under the Civil Aviation Regulations 1988) as shown in this compilation comprises Civil Aviation Order 100.28 Instrument 2007 amended as indicated in the Tables below.

Table of Orders

Year and number	Date of notification in Gazette/ registration on FRLI	Date of commencement	Application, saving or transitional provisions
CAO 100.28 Instrument 2007	17 December 2007 (see F2007L04661)	18 December 2007 (see s. 2)
CAO 100.28 2013 No. 1	FRLI 19 September 2013 (see F2013L01711)	20 September 2013 (see s. 2)

Table of Amendments ad. = added or inserted am. = amended rep. = repealed rs.= repealed and substituted
Provision affected	How affected
subs. 1...............	am. CAO 100.28 2013 (No. 1)
subs. 2...............	am. CAO 100.28 2013 (No. 1)
subs. 3...............	am. CAO 100.28 2013 (No. 1)

Overview

The Civil Aviation Order 100.28 Instrument 2007 was enacted to regulate the issuance of aircraft weight control authority, ensuring that individuals who perform such duties are adequately trained and experienced. This legislative instrument, made under the regulation 33B of the Civil Aviation Regulations 1988, was introduced by the Civil Aviation Safety Authority (CASA) to address the need for stringent standards in aircraft weight control, a critical aspect of aviation safety. The policy objective behind this Order is to maintain the highest safety standards in the aviation industry by ensuring that only qualified individuals are authorised to perform weight control duties. The Order outlines the requirements for the issue of an authority, including the need for adequate training, recent practical experience, and passing relevant examinations. The enactment of this Order ensures that aviation safety is upheld by qualified personnel, thereby protecting the public and maintaining the integrity of the aviation industry.

Scope and Application

The Civil Aviation Order 100.28 Instrument 2007, made under regulation 33B of the Civil Aviation Regulations 1988, pertains specifically to the requirements and procedures for issuing an aircraft weight control authority. This authority is critical for ensuring that aircraft are operated within safe weight and balance limits, a fundamental aspect of aviation safety. The order applies to individuals seeking to obtain or renew an aircraft weight control authority, requiring them to meet stringent training, experience, and examination criteria. It stipulates that applicants must demonstrate adequate training and recent practical experience in aircraft weight control, and successfully pass the relevant examination. The instrument also outlines the process for application, re-examination, issuance, and renewal of the authority, with specific forms and timeframes. The Civil Aviation Order 100.28 is applicable across the Commonwealth of Australia and is enforced by the Civil Aviation Safety Authority (CASA). The order’s scope includes all personnel involved in the weight and balance calculations for aircraft operations, which are integral to the safety and efficiency of flight operations. While the order does not explicitly state exclusions, it is understood that its application is limited to those directly involved in aircraft weight control activities. The order may be further extended or modified through subordinate instruments, ensuring it remains aligned with evolving aviation safety standards and practices.

Key Provisions

The Civil Aviation Order 100.28 Instrument 2007, as amended, governs the requirements for the issuance of an aircraft weight control authority. To apply for such an authority, applicants must demonstrate they have been adequately trained and have recent practical experience relevant to the duties associated with the authority (section 1.1). They must also pass the necessary examinations (section 3.1). Specifically, applicants who have completed a tertiary qualification in a relevant engineering discipline and are eligible for Graduate Membership of Engineers Australia in the Professional Engineer category are considered to have met the training requirement (section 1.2). Applications for the issuance or extension of an aircraft weight control authority must be made to the Civil Aviation Safety Authority (CASA) using Form 377 (section 2.1). The applicant must achieve a minimum mark of 75% to pass the examination, unless they fail to satisfactorily answer specific questions, in which case they will fail regardless of their total marks (section 3.2). The Act imposes several obligations on applicants and the Director of CASA. Applicants must submit satisfactory evidence of their qualifications, experience, and examination results to be considered for an aircraft weight control authority (section 1.1). Those who fail the examination may be granted a re-examination opportunity, subject to conditions set by the Director, including a waiting period and possibly additional training (section 4.1). The Director has the authority to issue an aircraft weight control authority to compliant applicants and may impose limitations on the authority as deemed necessary (section 5.1). Authorities are valid for a period of two years, and renewals must be applied for using Form 359, provided the applicant demonstrates continued proficiency and familiarity with aircraft weight control methods (section 6.1, 7.1). Violations of the provisions of this Order can result in various consequences. While the specific penalties are not detailed within the text, non-compliance with the requirements for the issuance, examination, and renewal of an aircraft weight control authority could lead to civil or criminal penalties under the broader Civil Aviation Regulations 1988, depending on the nature and severity of the breach. These could include fines, imprisonment, or both, reflecting the critical importance of accurate aircraft weight and balance calculations for flight safety.

Area of Law: Administrative Law
Instrument: Legislative Instrument
Concepts: Definitions & Interpretation; Commencement Provisions; Delegated & Subordinate Legislation; Licensing & Registration; Examination; Period of Validity

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Sourced from the Federal Register of Legislation at 26 August 2026. For the latest information on Australian Government law please go to https://www.legislation.gov.au.

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