<< >> NASA ASRS Report 863383, December 2009

An sf-340 flight crew experienced a compressor stall on descent. They ran the procedure and landed without incident.

Attributes
ACN	863383
Time
Date	200912
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Make Model Name	SF 340B
Operating Under FAR Part	Part 121
Flight Phase	Descent
Flight Plan	IFR
Component
Aircraft Component	Turbine Engine
Person 1
Function	Pilot Flying First Officer
Qualification	Flight Crew Commercial
Experience	Flight Crew Last 90 Days 33 Flight Crew Total 3300 Flight Crew Type 1200
Person 2
Function	Pilot Not Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 33 Flight Crew Total 3700 Flight Crew Type 1500
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

Shortly after leaving cruise altitude of 21;000 the left engine experienced a compressor stall. After initiating the descent I (flying pilot) reduced the power levers to approximately 50-60 % torque which is when the compressor stall occurred. We both noticed that the ignition light has come on and there were audible pops. As we were initiating the emergency non-normal card; I reduced the power further after noting a high itt; and the itt over temp light was on for approx 5 seconds. After reducing the power to approximately 30-40% the stall stopped and we finished the emergency non-normal card and checklist. After finishing the emergency non-normal checklists we continued the descent; notified the flight attendant and passengers and conduced a normal visual landing with no further abnormalities.

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Original NASA ASRS Text

Title: An SF-340 Flight Crew experienced a compressor stall on descent. They ran the procedure and landed without incident.

Narrative: Shortly after leaving cruise altitude of 21;000 the left engine experienced a compressor stall. After initiating the descent I (flying pilot) reduced the power levers to approximately 50-60 % torque which is when the compressor stall occurred. We both noticed that the ignition light has come on and there were audible pops. As we were initiating the emergency non-normal card; I reduced the power further after noting a high ITT; and the ITT over temp light was on for approx 5 seconds. After reducing the power to approximately 30-40% the stall stopped and we finished the emergency non-normal card and checklist. After finishing the emergency non-normal checklists we continued the descent; notified the flight attendant and passengers and conduced a normal visual landing with no further abnormalities.

Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.