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Project AS 11/07 - Review of Guidelines for Conducting Plume Rise Assessments AC-139-05

Topic code: 
Airspace and Aerodromes
Project status: 
Closed

Closure notes:

Project closed 28 November 2012.

Final AC 139-5(1) has been published.

Issue

The purpose of the AC is to provide guidance on the conduct of plume rise assessments in order to alert airspace users to any potential hazard. Since the AC was issued in 2004 a number of developments have occurred. These include improved plume rise modelling techniques and emergent power generating facilities with varying plume rise characteristics. This project aims to review the validity and reliability of the AC in order to ensure that plume rise hazards are appropriately and consistently identified.

The primary risk of no action is excessive and inappropriate regulation. The consequence of no action is the costly imposition of regulatory requirements on facilities with plume rise efflux of low risk, resulting in significant unnecessary restrictions to all airspace users.

Project Objective

The key objective of this project is to produce a revised AC which relies upon a robust framework for the assessment of plume rise efflux. This framework will be developed through research and review of the critical issues involved: the benchmark velocity and how it is derived, the effect of this velocity on aircraft in flight and how this information can be best presented in the aviation context to alert airspace users to the hazard.

Status

This project was approved by Peter Boyd, EM Standards Development & Future Technology Division on 7 March 2011.

Rules affected

AC 139-05

Project management

Project Leader: Anna Henry, Airspace Specialist, Office of Airspace Regulation

Project Sponsor: Peter Cromarty, Executive Manager Airspace and Aerodrome Regulation Group

Standards Development Project Manager: Leanne Graham

Project Priority

High

Airspace and Infrastructure Users Group (SCC)

Airspace and Infrastructure Users Group Sub-committee

History

Title Details Date
Consultation updates in 2012
Project AS 11/07 - Review of Guidelines for Conducting Plume Rise Assessments AC-139-05 This project is now closed

Refer to the project closure notes for further information.
28 Nov 2012
AC 139-5(1) – Plume rise assessments This AC has been published. 27 Nov 2012
DRAFT AC 139-05(1) – Guidelines for conducting plume rise assessments Comments are to be forwarded to the Project Leader, Anna Henry (anna.henry@casa.gov.au) by close of business 27 April 2012. 13 Apr 2012
Consultation updates in 2011
Project AS 11/07 - Review of Guidelines for Conducting Plume Rise Assessments AC-139-05 Project approved 11 Mar 2011