Part 121 of CASR Australian air transport operations - larger aeroplanes

Rule status

Current

New rules for operators conducting air transport in larger aeroplanes commenced on 2 December 2021.

Part 121 of the Civil Aviation Safety Regulations (CASR) covers the air transport rules for larger aeroplanes.

The term air transport replaces both charter and regular public transport (RPT) and adds medical transport operations such as patient transport.

You will also need to comply with Part 119 which deals with the general certification and management for air transport operations.

If you conduct other operations, such as rotorcraft air transport, you need to comply with other CASR flight operations rules (Parts).

Transition to new regulations

We have compiled information and resources about transitioning to the new regulations. Visit our flight operations transition section to find out more.

Who it affects

Part 121 generally applies to air transport operations in aeroplanes with a seating capacity of more than 9 seats, or a maximum take-off weight (MTOW) of more than 8,618 kg. 

Subpart 121.Z applies to air transport operations in single-engine aeroplanes with a seating capacity of more than 9 seats and a MTOW of 8,618 kg or less. 

All operators and pilots also need to comply with Part 91 – General operating and flight rules, noting that Part 121 may add to or turn off some Part 91 requirements – either completely or partially.

Legislative instruments

Legislative instruments include exemptions to particular regulatory requirements in aviation regulations or a Manual of Standards, but which apply to a broad range of persons. Instruments related to this part will display in this space or you can view our list of legislative instruments.

7 legislative instruments available

Non-legislative instruments

Non-legislative instruments include exemptions to particular regulatory requirements in aviation regulations or a Manual of Standards, but which apply to a particular person. Non-legislative instruments related to this part will display in this space or your can view our list of non-legislative instruments.

1 non-legislative instruments available

Guidance material

Advisory material provides advice and guidance to explain particular regulatory requirements of a CASR Part. Guidance material relating to this part will appear in this space or you can view all our guidance material.

10 guidance material available

Acceptable means of compliance and guidance material (AMC-GMs) for part 121 Australian air transport operations - larger aeroplanes.

Advisory Circular AC 1-02 provides information to the aviation industry, detailing the requirements to have and maintain an exposition or operations manual to meet the regulatory requirements of CASR and the MOS.

Advisory Circular, Flight ops - General resource AC 1-02

Advisory Circular AC 1-03 provides advice on CASR regulations pertaining the flight operations. They include Parts 91, 119, 121,133, 135 and 138 of CASR, specifically for those transitioning to these regulations on 2 December 2021.

Advisory Circular, Flight ops - General resource AC 1-03

Advisory Circular AC 121-03 reflect CASA's pre-determined acceptable means of compliance with requirements within the civil aviation legislation for certain aeroplane operators and training providers to conduct UPRT programs

Advisory Circular AC 121-03

Advisory Circular Multi-Part AC 121-08, AC 133-08 and AC 135-06 provides guidance regarding the requirements for carry-on baggage

Advisory Circular Multi-Part AC 121-08, AC 133-08 and AC 135-06

Multi-Part Advisory Circular AC 121-05, AC 133-04 and AC 135-08 describes acceptable methods for calculating passenger, crew and checked baggage weights for an Australian air transport operator.

Advisory Circular Multi-Part AC 121-05, AC 133-04 and AC 135-08

Multi-Part Advisory Circular AC 121-09, AC 133-06 and AC 135-10 provides guidance regarding the requirements for the carriage of special categories of passengers (SCPs) for operations that fall under Parts 91, 133, 135 and 121 of CASR.

Advisory Circular, Flight ops - General resource Multi-Part AC 121-09, AC 133-06 and AC 135-10

Multi-Part Advisory Circular AC 121-10, AC 133-07 and AC 135-11 provides guidance regarding the requirements for assigning passengers to seats in an emergency exit row for operations that fall under Parts 133, 135 and 121 of CASR.

Advisory Circular, Flight ops - General resource Multi-Part AC 121-10, AC 133-07 and AC 135-11

CAAP 82-1 provides background information and guidance to AOC holders seeking approval under CAO 82.0 to conduct extended diversion time operations (EDTO).

Civil Aviation Advisory Publication CAAP 82-1

Multi-Part Advisory Circular AC 91-19, AC 121-04, AC 133-10, AC 135-12 and AC 138-10 provides guidance regarding the requirements for safety briefing cards and passenger safety briefings, instructions and demonstrations for operations.

Advisory Circular Multi-Part AC 91-19, AC 121-04, AC 133-10, AC 135-12 and AC 138-10

Supporting resources

Supporting resources related to this part will appear in this space. These are used in conjunction to support the formal guidance material listed above.

4 supporting resources available

This document is intended to assist persons who will conduct air transport operations under Part 121 of CASR to prioritise their actions to transition to the new flight operations regulations.

The purpose of this document is to present and summarise the key elements of these determinations in plainer English, as the legal instruments themselves are relatively lengthy, repetitive and complex.

The document supports the commencement of the flight operations regulations and represents the definitions from across the legislative suite as it will appear when those rules commence on 02 December 2021.

Impact of new flight operations regulations on flight crew licencing exams. The introduction of the new flight operations regulations on 2 December 2021 will mean changes to the various flight crew licensing (FCL) theory exams.

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