Aerial firefighting helicopters ingest significant volumes of airborne particles, and operators are advised to conduct periodic “compressor washes” to remove the contaminants from the compressor.

The flight crew of a Boeing 747-400 noticed a pronounced EGT exceedance after leveling off at FL380 followed by vibrations that were outside of specified limits. Post-incident investigation revealed ...

Installing a recycle valve in parallel with the antisurge valve of a turbine-driven multistage (low pressure/high pressure) centrifugal compressor, in combination with control system modifications, ...