Compressor Stalls - Causes
The following is from an article I posted on AviationGlossary.com
Typical Causes of Compressor Stalls
- Excessive fuel flow caused by abrupt engine acceleration when the axial velocity (speed) is reduced by increased pressure in the combustion chamber due to the added combustion and the resultant rotational speed increase
- Operation of the engine outside of its RPM design parameters affecting the rotational speed of the compressor blade
- Turbulent or distorted / disrupted airflow to the engine inlet reducing the axial velocity
- Damage to either the compressor or turbine blades
- Low fuel flow due to abrupt engine deceleration causing a decreased back pressure
Compressor Stall Flight Deck Indications
- An increase in the vibration level of the engine
- An increase in the Exhaust Gas Temperature -- EGT
- RPM Fluctuations