Recent Changes to Australian RegulationEngineering & Design – Parts 21 &39

21.M - Modifications & Repairs

CASR Subpart 21.M replaced the old CAR 35, 36 & 36A on 27 June 2011

The vast majority of modifications and repairs are approved by authorised persons Modifications & repairs are separate from STCs STCs are approved by CASA, usually on the

recommendation of an authorised person

21.M - Modifications & Repairs

Authorised person acts on behalf of CASA to approve modifications and repairs Most authorised persons also design the

modification or repair

Authorised persons are required to operate to a Design Approval Procedures Manual (DAPM), part of which is CASA approved

21.M - Modifications & Repairs

There are strict limits on what authorised persons can approve: Limits on aircraft complexity (ie, Part 23, 27, 25,

29, etc) Limits on engineering speciality (ie, structures,

radio, powerplant, software, etc) Fixed wing, rotary wing, analogue, digital Any other limitations CASA believes appropriate

21.M - Modifications & Repairs

Authorised persons do not have a free rein must advise CASA of any alteration which is

considered Major and under some other conditions specified in their DAPM

Authorised persons must find compliance with the aircraft’s certification basis

Need CASA approval to vary the design standard Restricted category Equivalent Safety Determinations

21.M - Modifications & Repairs

Authorised persons must ensure that there are, where appropriate: Instructions for Continuing Airworthiness Flight Manual amendments

The holder of a modification or repair approval: Must provide ICA and Flight Manual amendments

to any operator of an affected aircraft Is responsible for continuing airworthiness of the

modification or repair

21.M - Modifications & Repairs

Authorised persons often become the holder of the modification or repair that they have designed and approved.

21.M aligns with the proposed 21.J 21.J will replace all reference to “Authorised

Person” with “Approved Design Organisation”

21.J – Approved Design Organisations

CASR 21.J is currently entitled “Delegation Option Authorisation Procedures”

Based on the US FAR 21.J No-one in Australia has applied for an

authorisation under the current 21.J Poorly understood Not suited to Australian Industry

21.J – Approved Design Organisations

New CASR 21.J is under development and will replace the existing 21.J

Based on the EASA Part 21.J, it will introduce “Approved Design Organisations”

References in 21.M to “Authorised Persons” will be changed to “ADOs”

Many other references in Part 21 will also change from “Authorised Person” to “ADO”

21.J – Approved Design Organisations

Regulations are currently in draft form Regulations will be made by the middle of

2012, and become effective in March 2013 There will be a 4 year period for authorised

persons and organisations to transition to ADOs

CASR 39 - Airworthiness Directives

In October 2009 CASR 39 changed to recognise State-of-Design ADs as Australian ADs.

CASA no longer issues Australian ADs which repromulgate State-of-Design ADs

CASA no longer mails out ADs to Registered Operators

It is the Registered Operator’s responsibility to find their own ADs

CASA does publish State-of-Design ADs on the CASA web site

CASR 39 - Airworthiness Directives

CASA can, and does, still issue its own ADs Compliance with an Australian AD, regardless

of its origin, is mandatory State-of-Design AMOCs against a State-of-

Design AD are automatically acceptable (if they are applicable).

CASA still issues its own AMOCs and Exclusions

QUESTIONS?