- Publications and resources
- Rules and regulations
- Safety management
- Licences and certification
- About us
Go to top of page
Project AS 11/15 - 1. Review of Manual of Standards Part 139 - Aerodromes, Chapter 6 Section 2 - Runway Widths and 2. Review of CAR 235A Instrument - Instructions - minimum runway width for aeroplanes
Project closed 15 March 2019.
The objectives of this project were met with the amendment of reg 235A of CAR, amendments to MOS Part 139, the issue of new CAAP 235A and amendments to the AIP.
Predominantly this project is designed to separate the regulatory management of aeroplane operations from aerodrome operations on narrow runways. This will occur by rationalising runway width requirements through the amendment of Part 139 Manual of Standards (MOS) and CAR 235A.
The September 2012 revised project terms of reference were designed to provide clarity around the regulation of aerodromes and the applicability of aerodrome operators upgrading their aerodrome facilities to cater for the increasing numbers of "larger" aeroplanes for which earlier aerodrome design did not consider.
The Part 139 MOS is the Manual of Standards - Aerodromes, which includes provisions for the upgrading and initial design of aerodromes.
The revision of CAR 235A is fundamental to the streamlining of the runway width requirements from both the aerodrome infrastructure considerations and the operational aspects of aeroplane operations from and into narrow runways.
CAR 235A, CAR 92, and related regulations and documents, such as the AIP, are distinctively related to the operation of aeroplanes at aerodromes and in some cases are specifically related to the operation from and into narrow runway widths.
The operational regulations and MOS 139 are inter-related, however the application of MOS 139 is not specifically intended to limit the operation of aeroplanes from aerodromes particularly aerodromes with narrow runways.
CASA has issued a number of regulations, advisory material and exemptions related to runway width issues for many years along with adopting international best practice where possible.
CASA EX126/12: Exemption - minimum runway width, was issued against the requirements of CAR 235A in respect of aeroplanes engaged in private and aerial work operations. This resulted from consultation at the Standards Consultative Committee on 4 July 2012.
An amendment to CAR 235A was proposed. The regulation will be accompanied by a Civil Aviation Advisory Publication - (CAAP) that provides advice to operators on how to gain approval for operations from and into runways narrower than required by the ICAO Aerodrome Reference Code (ARC).
It is important to note that the Part 139 MOS - Aerodromes is closely aligned with ICAO Annex 14 - Aerodromes, and which defines the standards for aerodrome design. It is clearly noted in Annex 14 that it is "not intended that these specifications limit or regulate the operation of an aircraft".
For important further background on these issues, please see the History page attachment.
- Provide exemption against the runway width requirements of CAR235A for aeroplanes, with MTOW >5700kg engaged in private and aerial work.
- Amend CAR 235A - minimum runway width for aeroplanes, certificated on or after 1st March 1978, with MTOW >5700kg engaged in RPT and Charter operations
- Promulgate a CAAP 235A detailing the runway width approval and operational requirements narrow runway operations.
- Amend CAAP 92- A1(0) detailing the recommended requirements for aerodromes and landing areas which will be referenced by operators and pilots of aeroplanes with maximum take-off weight less than or equal to 5700kg and those aeroplanes with MTOW greater than 5700kg engaged in private and aerial work.
- Remove the requirement to issue runway width exemptions against CAR235A.
- Amend MOS Part 139:
- to remove aeroplane operational limitations in relation to CAR 235A runway widths and instructions
- to include reference to the requirement that the aerodrome operator must choose a code for the aerodrome based on existing facilities at the aerodrome that comply with the requirements of MOS Part 139
- to remove reference to critical aircraft and align terminology with ICAO Annex 14
- to clarify that the standards in MOS Part 139 set out a regulatory framework for aerodrome design and the upgrade of facilities for use by a specific intended aircraft code group
- Chapter 6, Section 6.2 - remove specific reference to the Airbus A380 and promulgate generic standards to cater for new large aeroplane types
- remove Chapter 13 from MOS Part 139 and incorporate the content as required into the associated CAAP material.
- Align the AIP with the applicable changes made to CAR 235A and MOS Part 139.
- Amend applicable sections of CAO 82.3 to reflect the changes made to CAR235A and MOS Part 139.
- Remove the requirement to issue runway width exemptions, to aerodrome operators, specifically in relation to the operation of larger aeroplanes into an aerodrome for which the aerodrome was not originally intended.
- Incorporate the changes into the new CASR Part 121 regulation suite.
- The amended terms of reference were approved by Peter Boyd Executive Manager Standards Division on 9 November 2012.
Detailed Status of project as at August 2014:
- Regulation CAR 235A and AIP revision will become effective with the subsequent publication of CAAP 235A-1(0) on the 13th November 2014.
- CAR 235A amendment drafting complete, undergoing the regulatory making process.
- CAAP 235A-1(0) drafting is complete. The final version will be published when the CAR 235A amendment is made. The draft CAAP has been posted to provide advice to operators in advance of the amendment to CAR 235A.
- AIP - Suitability of Aerodromes, Runway Width revision is complete ready for publication.
- MOS 139 Post Implementation Review consultation complete, MOS amendments are in the final stages of completion, with implementation of the amendment scheduled for 13th November 2014.
CAR 235A and MOS 139
Further history/background - refer to background_as11_15.pdf (pdf 160.31 KB)
Project Leader: firstname.lastname@example.org
Project Sponsor/s: Peter Boyd Executive Manager, Standards Division and Gerard Campbell Executive Manager, Operations Division.
|Consultation updates in 2019|
|Project AS 11/15 - Review of Manual of Standards Part 139 - Aerodromes, Chapter 6 Section 2 - Runway Widths and Review of CAR 235A Instrument - Instructions - minimum runway width for aeroplanes||Project closed.||15 March 2019|
|Consultation updates in 2016|
|AC 139-27 v1.0 - Guidelines for certified air/ground radio services||This AC has been published.||22 April 2016|
|Draft AC 139-27 v1.0 - Guidelines for certified air/ground radio services||All comments should be sent to the Project Leader, email@example.com by close of business 23 March 2016||8 March 2016|
|Consultation updates in 2015|
|NFC 139/05 - Aerodromes||This NFC has been published.||12 Jan 2015|
|Consultation updates in 2014|
|NFRM CAR 235A - Minimum runway widths for aeroplanes||This NFRM has been published.||12 Nov 2014|
|235a_1.pdf (pdf 1.27 MB)||This CAAP has been published.||4 Nov 2014|
|NPC 139/05 - Runway Width Review of Part 139 MOS - Aerodromes Section 6.2 - Runways AND Post Implementation Review of Part 139 MOS - Aerodromes Chapters 1 & 2 including changes to subsequent chapters||This NPC closed for comment 5 May 2014.||4 Mar 2014|
|Consultation updates in 2013|
|Consultation Draft for CAR 235A Amendments - Landing on and taking off narrow runways - certain aeroplanes||This Consultation Draft closed for comment 21 June 2013.||24 Jun 2013|
|caap-235a-1-0.pdf (pdf 2.07 MB)||This Draft CAAP 235A-1(0) closed for comment 21 June 2013.||24 Jun 2013|
|Consultation Draft for CAR 235A Amendments - Landing on and taking off narrow runways - certain aeroplanes||All comments should be forwarded to the Project Leader, Miles Gore-Brown via the email distribution box firstname.lastname@example.org by close of business 21 June 2013.||24 May 2013|
|caap-235a-1-0.pdf (pdf 2.07 MB)||All comments should be forwarded to the Project Leader, Miles Gore-Brown via the email distribution box email@example.com by close of business 21 June 2013.||24 May 2013|
|Consultation updates in 2011|
|Project AS 11/15 - Review of Manual of Standards Part 139 - Aerodromes, Chapter 6 Section 2 - Runway Widths and Review of CAR 235A Instrument - Instructions - minimum runway width for aeroplanes||Project approved.||24 May 2011|