Complex sentence: Compressor axially-symmetric stalls, or compressor surges, are immediately identifiable because they produce one or more extremely loud bangs from the engine and reports of fire or flames "shooting" out of the engine are common during this type of compressor stall.
Split into simpler sentences: Compressor axially-symmetric stalls, or compressor surges, are immediately identifiable because they produce one or more extremely loud bangs from the engine. Reports of fire or flames "shooting" out of the engine are common during this type of compressor stall.