All aircraft engines require regular maintenance to ensure safe and healthy performance, and proper maintenance requires having the proper tools. If you have a turboprop engine like a Pratt and Whitney PT6A, this list of essential tools will help you keep it running healthy for its full lifespan.
Fuel nozzles for a turboprop need to be cleaned roughly every 200 to 400 hours, and the best way to do that is with an ultrasonic wash that can ensure the nozzle is functioning properly and that there are no problems like blockages. While cleaning, be sure to check for leaks and flow irregularities like streaking, spitting, drooling, or other patterns that can cause damage to the hot section of the engine. Flow check fixtures and pressure check fixtures fitted over the nozzle can help identify tips that need cleaning or replacing.
Borescope kits are critical for performing inspections as well, as they are far quicker (and less expensive) than trying to open up the engine entirely. Inserting a borescope through the exhaust duct port and power turbine stage can reveal trailing edge cracks on compressor turbine blades, for instance. A borescope kit with a guiding can easily fulfill this need, and allow for an assessment of hot section components that might not be visible from a regular ground power check or flight data collection.
Oil filter maintenance is another task that needs to be fulfilled regularly, roughly every 100 hours. Because trying to open the oil filter check valve by hand can damage the check valve seal and cause static oil leakage, you should use an oil filter puller/pusher tool to do so.
Lastly, aircraft engines need to be washed periodically to remove salt and other contaminants, the frequency of which depends on the environment the aircraft operates in. Compressor wash rigs and turbine rinse tubes are essential for this. Some engines have a wash ring installed around the air intake, so all that needs to be done is to connect the compressor wash rig and start pumping water. After the compressor wash, the turbine rinse tube can be used to clean the turbine as well. For desalination, simple water will do, but you should check the water quality you are using, and make sure it is suitable for cleaning. Dirty water will simple add more problems than it solves, after all.
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