The original task headings in the Fibre Optic Harness Study were ‘Inspection and Fault Analysis’ and ‘Repair
and Maintenance’. However, to create a more coherent and readable handbook these have been re-arranged
in this part of EN 4533 to make two new topic headings – ‘Fault analysis and repair’ and ‘Scheduled
maintenance and inspection’. The first deals with what to do when something goes wrong – how to go from a
fault notification to locating the fault, and finally, repairing it. The second covers the recommended procedures
for upkeep and maintaining harness health over the lifetime of its installation. It is beneficial to read both
sections together as many of the practices and techniques are applicable to both situations.
Two supplemental sections consider designing a harness with repair and maintenance in mind and good
practices when maintaining or repairing a harness.
To keep the handbook to a reasonable size, other Harness Study reports are called up where more detail is
required. This handbook does not contain sufficient information, for example, to be the sole reference for
harness fault finding but it should provide adequate background for somebody working in that field.
BS EN 4533-004:2006 history
2018BS EN 4533-004:2018 Aerospace series. Fibre optic systems. Handbook. Repair, maintenance, cleaning and inspection
2006BS EN 4533-004:2006 Aerospace series - Fibre optic systems - Handbook - Repair, maintenance and inspection