The fluid wash method also helps to clean which other engine component?

• A. The compressor section
• B. The turbine area
• C. The accessory gearbox
• D. The combustor liner

Answer: (B)

Fluid wash circulates a cleaning solution through the engine core to dissolve and flush away deposits. As the solution is pumped in at the compressor side and flows through the core, it passes through the turbine section where deposits can build up on blades and nozzle guides. These deposits—oil varnish, coke, and other residues—can impair efficiency and cooling passages, so washing helps remove them from the turbine area as it cleans the rest of the core. While the wash also affects the compressor, the question highlights the additional component cleaned by this method, which is the turbine area. Other parts like the combustor liner or accessory gearbox require different cleaning approaches.