This standard identifies the competences you need to modify aircraft cableforms and looms, in accordance with approved procedures. You will be required to change, modify and update cableforms and looms, in accordance with modification leaflets, latest issue drawings and standards. You will be expected to remove and replace cables, add cables, change breakout points, and change the routeing of cables. This will involve cutting the appropriate cables to the required lengths, stripping the appropriate amount of cable insulation, and soldering and crimping the appropriate connectors to the cable ends, using the specified or appropriate techniques and fastening devices.

The cableforms and looms will include co-axial cable assemblies, heavy duty cable assemblies, aircraft system cable assemblies, secure speech cable assemblies, aircraft lighting assemblies, automatic flying control systems (AFCS) cable assemblies, and headset leads (mic-tel leads).

Your responsibilities will require you to comply with organisational policy and procedures for the cableform/loom modification activities undertaken, and to report any problems with the activities, materials or equipment used that you cannot personally resolve, or are outside your permitted authority, to the relevant people. You will need to ensure that all tools, equipment and materials used in the modification of the cableforms are correctly accounted for on completion of the activities, and you must complete all necessary job/task documentation accurately and legibly.

You will be expected to work either with a high level of supervision or as a member of a team, and you will take personal responsibility for your own actions and for the quality and accuracy of the work that you carry out.  Where team working is involved, you must demonstrate a significant personal contribution during the team activities in order to satisfy the requirements of this standard, and you must demonstrate competence in all the areas required by the standard.

Your underpinning knowledge will be sufficient to provide a sound basis for your work, and will provide an informed approach to applying the appropriate cableform modification techniques and procedures. You will understand the procedures and techniques for modifying the aircraft cableforms and looms, and will know about the tools and techniques, in adequate depth to provide a sound basis for carrying out the activities to the required specification.

You will understand the safety precautions required when carrying out the cableform/loom modification activities. You will be required to demonstrate safe working practices throughout, and will understand the responsibilities you owe to yourself and others in the workplace.

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1. work safely at all times, complying with health and safety legislation, regulations, directives and other relevant guidelines
2. obtain and follow the relevant modification specifications and job instructions
3. confirm and agree what modifications are to be carried out to meet the specification
4. prepare the cableforms and looms for the required modification
5. carry out the modification using approved materials, methods and procedures
6. complete the modification within the agreed timescale
7. ensure that the modified cableforms and looms meet the specified operating conditions
8. produce accurate and complete records of all modification work carried out
9. deal promptly and effectively with problems within your control and report those that cannot be solved

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1. the specific safety precautions and procedures to be observed whilst carrying out the modifications to the cableforms and looms (including any specific legislation, regulations or codes of practice relating to the activities, equipment or materials)
2. the health and safety requirements of the work area in which you are carrying out the modification activities, and the responsibility these requirements place on you
3. the hazards associated with modifying aircraft cableforms and looms, and how they can be minimised
4. the personal protective equipment and clothing (PPE) to be worn during the modification activities
5. the various types of drawing and specifications that are used during the cableform and loom modification
6. how to identify the components to be used; component identification systems (such as codes and component orientation indicators)
7. preparations to be undertaken on the cableform/loom, prior to modification
8. how to take electrostatic discharge (ESD) precautions, and why are they needed
9. the methods and techniques to be used for soldering and de-soldering, and the importance of adhering to them
10. the methods and techniques to be used for crimping and heat shrinking, and the importance of adhering to them
11. the methods and techniques to be used for the assembly of screened and unscreened plugs and sockets
12. how to identify the difference between composite and metal plugs and sockets
13. the different types of cable protection, the reasons why each type would be used, and when
14. the importance of using the specified cables and cable end fittings for the modification, and why you must not use substitutes
15. the quality control procedures to be followed during the cableform/loom modification operations
16. how to conduct the necessary checks to ensure the accuracy and quality of the modification
17. the importance of ensuring that the completed and modified cableform/loom is free from damage
18. why tool/equipment control is critical, and what to do if a tool or piece of equipment is unaccounted for on completion of the activities
19. the problems that can occur with the modification operations, and how these can be overcome
20. the recording documentation to be completed for the activities undertaken and, where appropriate, the importance of marking and identifying specific pieces of work in relation to the documentation
21. the extent of your own responsibility, and whom you should report to if you have problems that you cannot resolve

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1. Carry out all of the following during the modification activities:

   1. ensure that you have the correct documentation for the cableform/loom modification operations (such as drawings, job instructions, aircraft standards)
   2. adhere to procedures or systems in place for risk assessment, COSHH, personal protective equipment and other relevant safety regulations
   3. ensure that all tools and equipment used are within current calibration dates
   4. maintain safe access and working arrangements for the area in which the modification activities take place
   5. dispose of waste items in a safe and environmentally acceptable manner, in line with company procedures
   6. return all tools and equipment to the correct location on completion of the activities
   7. leave the work area in a safe condition and free from foreign object debris

2. Carry out modifications to cableforms/looms for two of the following aircraft electrical systems:

   1. co-axial cable assemblies                                         
   2. aircraft lighting cable assemblies
   3. heavy duty cable assemblies                                    
   4. AFCS cable assemblies
   5. aircraft system cable assemblies                              
   6. headset leads (mic-tel leads)
   7. secure speech cables assemblies                            
   8. general aircraft cable assemblies
   9. other specific cable assembly

3. Carry out four of the following modifications:

   1. replacing cables of different type or length                                    
   2. making changes to looms
   3. changing the position or angle of breakout points                          
   4. adding looms
   5. changes to component/connector on end of cable                         
   6. removing cables
   7. changing the routeing of cables                                                    
   8. adding cables

4. Carry out seven of the following cable end termination processes:

   1. stripping the outer coating without damage to conductor insulation
   2. stripping off an appropriate length of cable conductor insulation/protection
   3. removing and replacing mechanical/screwed/clamped cable end connections
   4. removing and replacing crimped cable end connections (such as spade end, loops, tags and pins)
   5. removing and replacing snap/push on cable end connections
   6. soldering and de-soldering cable end connections
   7. removing and remaking an unscreened plug and socket assembly
   8. removing and remaking a screened plug and socket assembly
   9. removing and remaking a co-axial cable connection
   10. removing and reapplying heat shrink devices/boots
   11. removing and replacing cable protection

5. Carry out modifications in compliance with one of the following standards:

   1. Civil Aviation Authority (CAA)         
   2. Ministry of Defence (MoD)                     
   3. customer standards and requirements
   4. Federal Aviation Authority (FAA)            
   5. company standards and procedures

6. Complete the relevant paperwork, to include one from the following, and pass it to the appropriate people:

   1. build records
   2. log cards
   3. job cards
   4. aircraft flight log

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​Additional Information

You will be able to apply the appropriate behaviours required in the workplace to meet the job profile and overall company objectives, such as:

• strong work ethic
• positive attitude
• team player
• dependability
• responsibility
• honesty
• integrity
• motivation
• commitment

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2

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2020

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Current

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Original

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Semta

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SEMAER2-18

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Engineering, Engineering and Manufacturing Technologies, Engineering Professionals, Science and Engineering Technicians

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5234

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Aeronautical; Engineering; remove and replace cables; add cables; change breakout points; and change the routeing of cables; Cutting; Stripping; soldering and crimping; co-axial cable assemblies; heavy duty cable assemblies;

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