High Altitude Operation; Engine Compressor Stalls - Textron Cessna Grand Caravan Ex 208B Pilot's Operating Handbook And Faa Approved Airplane Flight Manual

CESSNA SECTION 4
MODEL 208B 867 SHP NORMAL PROCEDURES
GARMIN G1000

HIGH ALTITUDE OPERATION

At altitudes above 20,000 feet, a compressor surge can be experienced
if engine power is rapidly re-applied immediately after a power
reduction. This characteristic is not detrimental to the engine and can
be eliminated completely by turning the BLEED AIR HEAT switch ON
and adjusting the TEMP HOT control knob to the mid-point setting.

ENGINE COMPRESSOR STALLS

An engine compressor stall can be noted by a single or multiple loud
popping noise from the engine compartment. This situation can be
resolved by reducing the engine power to a point where the "popping"
discontinues, and slowly advancing the POWER lever to the necessary
setting for continued flight. The use of BLEED AIR HEAT can also help
eliminate engine compressor stalls if this situation is encountered.
FAA APPROVED
208BPHCUS-00 U.S. 4-69