Google Links

Follow the links below to find material targeted to the unit's elements, performance criteria, required skills and knowledge

Elements and Performance Criteria

  1. Inspect rotor and rotor control systems and components
  2. Inspect basic rotary wing airframe systems
  3. Ground test rotor and rotor control systems
  4. Test/adjust basic rotary wing airframe systems and components
  5. System adjustment is performed in accordance with maintenance manual
  6. Troubleshoot rotor and rotor control systems
  7. Troubleshoot basic rotary wing airframe systems
  8. Remove and install rotary wing rotor and rotor system components
  9. Remove and install rotor control system components
  10. Remove and install basic rotary wing airframe system components

Range Statement

This field allows for different work environments and conditions that may affect performance. Essential operating conditions that may be present (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) are included.

Rotor and rotor control system components include:

Main rotor blades and tail rotor blades

Rotor heads, swash plates and tail rotor pitch control assemblies

Mechanical flight control components (collective and cyclic pitch levers, rudder pedals, cables, pulleys, guides, fairleads, bellcranks, rods, torque tubes, chains and sprockets)

Main rotor, intermediate or tail rotor gearboxes

Drive shafts and couplings

Engine and rotor system operation:

Must be performed by a qualified pilot

Airframe systems include:

Fuel systems

Cabin heating systems

Airframe system components include:

Rigid or flexible fuel tanks, selector/shutoff valves and rigid or flexible plumbing

Cabin heater ducting and control valves

Procedures and requirements include:

Industry standard procedures specified by manufacturers, regulatory authorities or the enterprise


Performance Evidence

Evidence required to demonstrate competency in this unit must be relevant to and satisfy all of the requirements of the elements and performance criteria under the specified conditions of assessment, and must include:

using hand skills, tools and test equipment in the testing, adjustment and troubleshooting of:

rotary wing mechanical control systems

helicopter airframe systems and components, including rotors and rotor system

recognising system and component defects/external damage, correct installation and security for the range of airframe systems listed in the Range of Conditions

removing, installing and rigging of rotor systems and rotor/flight controls

removing and installing the range of airframe components listed in the Range of Conditions

checking rotor mass balance

performing system functional tests and checks to isolate system faults and assess post-maintenance serviceability

effectively using maintenance documentation and relevant fault diagnosis guides in the troubleshooting process and for component removal and installation

applying standard procedures

observing all relevant WHS procedures, including the use of PPE and MSDS.

The underlying skills inherent in this unit should be transferable across a range of inspection, testing and troubleshooting applications (including the timely involvement of supervisors or other trades) associated with the, rotors, rotor control systems, airframe systems and components of basic rotary wing aircraft. It is essential that relevant procedures, cleanliness requirements and safety precautions are fully observed, understood and complied with. Ability to interpret inspection procedures and specifications (allowable limits) and apply them in practice is critical.

This shall be demonstrated through application across a range of rotors, rotor control systems, airframe systems and components as listed in the Assessment Conditions.


Knowledge Evidence

Evidence required to demonstrate competency in this unit must be relevant to and satisfy all of the requirements of the elements and performance criteria and include knowledge of:

WHS precautions relevant to airframe system maintenance, including the lifting and handling of heavy components and how to obtain PPE and MSDS

standard trade practices relating to tool and test/rigging equipment usage and installation/securing of system components

theory of flight:

airflow

conditions of flight

lift and forces

drag

rotary flight principles:

terminology relating to:

aerofoils

main rotor blades

rotor discs

rotors (main and tail)

aerodynamic characteristics:

aerofoil design

forces

rotor thrust and power requirements

vortex ring

autorotation

helicopter stability

helicopter dynamic components:

main rotors:

blades

heads

linkages

tail rotors

swash plates

transmissions and drive shafts

helicopter structure and airframe systems:

structure and layout

engine and transmission

flight control system layout and operation

cabin heater system layout and operation

fuel system layout and operation

helicopter maintenance procedures and troubleshooting

relevant maintenance manuals

relevant regulatory requirements and standard procedures, including requirements for engine and rotor system operation.