Unit of competency details

DEFCA425B - Supervise the operation of mortars (Release 1)


ReleaseStatusRelease date
1 1 (this release)Current 15/Mar/2012

Usage recommendation:
Is superseded by and equivalent to DEFCA432 - Supervise the operation of mortars1 Pre-requisite removed. Application added. 23/Jan/2013

Training packages that include this unit


SchemeCodeClassification value
ASCED Module/Unit of Competency Field of Education Identifier 030717 Plant And Machine Operations  

Classification history

SchemeCodeClassification valueStart dateEnd date
ASCED Module/Unit of Competency Field of Education Identifier 030717 Plant And Machine Operations  03/Sep/2012 
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Modification History

Not applicable.

Unit Descriptor

Unit Descriptor 

This unit covers the competency required to supervise and control all aspects of the operation of mortars.

Application of the Unit

Application of the Unit 

The application of this unit in the workplace - the environments, complexities and situations involved - will be written during Phase II of the Review of the PUA00 Public Safety Training Package.

This text will be useful for the purposes of job descriptions, recruitment advice or job analysis; where possible, it will not be too job specific to allow other industries to import it into other Training Packages, where feasible.

Licensing/Regulatory Information

Not applicable.


Prerequisite Unit /s 

DEFCA412B Operate a mortar

DEFCA421B Supervise infantry operations

Employability Skills Information

Employability Skills 

This unit contains employability skills.

Elements and Performance Criteria Pre-Content

Elements describe the essential outcomes of a Unit of Competency.

Performance Criteria describe the required performance needed to demonstrate achievement of the element. Where bold italicised text is used, further information is detailed in the Required Skills and Knowledge and/or the Range Statement. Assessment of performance is to be consistent with the Evidence Guide.

Elements and Performance Criteria



1. Prepare and deploy mortars 

1.1 Resources required  for the performance of the task are determined and organised in accordance with orders

1.2 Identified problems/shortfalls are reported to immediate supervisor in accordance with standard procedures 

1.3 Mortars are deployed and the command post is established in accordance with orders

1.4 Occupational health and safety (OH&S) requirements and recognised safety precautions are applied throughout the operation

2. Engage targets with mortars 

2.1 Command post is effectively supervised

2.2 Accuracy of all firing data is confirmed

2.3 Lay of all weapons are correct before firing

2.4 Appropriate firing orders are given to the direct fire support weapon operators

2.5 Appropriate ammunition  is selected in accordance with orders

2.6 Minor incidents  are rectified in accordance with standard procedures

2.7 Major incidents  beyond own level of authority or competence are reported to manager and action is taken as directed

3. Ensure mortars are maintained 

3.1 Operator maintenance activities are supervised

3.2 Reported defects are rectified within limits of authority or reported to supervisor

3.3 Maintenance  activities are completed in accordance with standard procedures

Required Skills and Knowledge


This describes the essential skills and knowledge and their level, required for this unit.

Required Skills 

  • interpret orders

Required Knowledge 

  • ammunition identification:
  • type
  • colour
  • hazard band
  • labelling
  • markings
  • lot/batch numbers
  • packaging
  • safety precautions associated with the task

Evidence Guide


Critical aspects for assessment and evidence required to demonstrate competency in this unit 

Assessment must confirm the ability to effectively direct and control the mortar operating crew supervise command post activities; to conduct sight testing; and to conduct non-technical inspection.

Consistency in performance 

Competency should be demonstrated on operations or in simulated operational environments over time while firing live high explosive ammunition.

Context of and specific resources for assessment 

Context of assessment 

Competency should be assessed in a simulated operational environment.

Specific resources for assessment 

Access to a live firing range, mortar crews, at least two mortars and live ammunition.

Range Statement


The Range Statement relates to the Unit of Competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised  wording in the Performance Criteria is detailed below.

Resources required may include 


Any allocated support






Standard procedures may include 

Australian Standards

Defence Instructions

Doctrine pamphlets

Job guides, other publications

Manufacturers' handbooks, industry specifications and technical instructions

OH&S regulations

Organisational policies and procedures

Procedure manuals

Relevant local government by-laws

Relevant state/territory or federal legislation

Routine Orders

Standing Operating Procedures

Standing Orders

Written and verbal orders

Ammunition may include 

Anti armour

High explosive


Improved conventional munitions

Precision guided munitions


White phosphorus

And may be used with following fuse types:

  • super quick (point detonating /graze)
  • delay
  • proximity
  • time
  • near surface burst

Minor incidents may include 

Damage to ancillary equipment

Damage to firing mechanism

Damage to sighting equipment

Injury to personnel

Jammed ammunition

Major incidents may include 

Loss of personnel

Exposure to direct or indirect attack from hostile forces unintended explosive ordnance detonation

Maintenance of mortars may include 

Bore sighting

Non-technical inspection

Sight testing

Unit Sector(s)

Not applicable.

Corequisite Unit/s

Co-requisite Unit /s 


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