Turbine Ignition Maintenance

Turbine Ignition Maintenance By Jennifer Sparks and Brad Mottier November 1999 Most aircraft engines rely on an electrical ignition system to create a spark, which in turn initiates or continues the engine's combustion process. Many...


Visually inspect leads for obvious signs of carbon tracking on the in-sulators, indicative of a high-voltage flashover. Physical damage to the braided conduit assemblies is not permissible either. The metal braiding — an important part of the igni-tion system electrical circuit — provides protection to other engine and aircraft systems from electromagnetic interference, and is vital to the ef-ficient transfer of power from exciter to plug. Metal braiding containing more than four or five broken strands mandates replacement of the igni-tion lead. For field repair of ignition leads, repair kits can be purchased from lead manufacturers.

Performing periodic maintenance on an ignition system is essential to the overall flightworthiness of any aircraft. With periodic inspection and use of OEM manufacturer new and overhauled units and spare parts, maintenance costs and departure de-lays will be minimized.


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