SF340 first officer experiences a mild compressor stall after leveling off at 11;000 ft during desce...

Narrative:

On the descent phase of flight; the aircraft leveled off after a descent from 14;000 to 11;000 ft. Right after level off; we heard two pops and associated vibrations though the aircraft. The aircraft yawed left slightly; the left ignition light came on; and the master caution with left bleed fault/left bleed closed lights illuminated. This airplane had two deferrals the de-ice boot system; and the rudder limiter. Weather conditions were perfect: VMC; no clouds; not hazy and warm. With the rudder limited aircraft we were at approximately 180 KTS with a torque setting of 50% per engine at 11;000 ft. After the event occurred we checked the engine instruments and noted that all indications appeared to be normal. We considered running emergency memory items for a compressor stall. But since the engine re-lit/recovered back to normal it was decided that it was not applicable. It was decided that with our proximity to destination that we would leave the bleed off; and focus our attention on landing the aircraft safely. The captain positively transferred controls to me and briefed ATC and the flight attendant. He informed ATC about what had happened; and requested that as a precaution to have airport fire and rescue standing by on the runway. No emergency was declared because we had no abnormal engine indications. Having trucks meet us was a precaution if we had any more problems during the final descent and landing phase of the flight. After he was done with communicating our intentions with ATC and the flight attendant I positively exchanged controls back to him. I performed all the normal descent and approach check lists and informing tower on which engine was the problem. We landed with out further incident. After landing we asked crash fire rescue equipment to make a visual inspection of the aircraft to make sure we had no exterior damage. There was no visual damage to the aircraft. I completed the after landing checklist; and the non-normal checklist for the left bleed closed. We proceeded normally to the gate; parked and de-planed the passengers as normal. The captain then contacted dispatch and maintenance control and informed them of the situation.

Original NASA ASRS Text

Title: SF340 First Officer experiences a mild compressor stall after leveling off at 11;000 FT during descent. Engine recovered on its own and the flight crew continued to their destination.

Narrative: On the descent phase of flight; the aircraft leveled off after a descent from 14;000 to 11;000 FT. Right after level off; we heard two pops and associated vibrations though the aircraft. The aircraft yawed left slightly; the left ignition light came on; and the master caution with left bleed fault/left bleed closed lights illuminated. This airplane had two deferrals the de-ice boot system; and the rudder limiter. Weather conditions were perfect: VMC; NO clouds; NOT hazy and warm. With the rudder limited aircraft we were at approximately 180 KTS with a torque setting of 50% per engine at 11;000 FT. After the event occurred we checked the engine instruments and noted that all indications appeared to be normal. We considered running emergency memory items for a compressor stall. But since the engine re-lit/recovered back to normal it was decided that it was not applicable. It was decided that with our proximity to destination that we would leave the bleed off; and focus our attention on landing the aircraft safely. The Captain positively transferred controls to me and briefed ATC and the flight attendant. He informed ATC about what had happened; and requested that as a precaution to have airport fire and rescue standing by on the runway. No emergency was declared because we had no abnormal engine indications. Having trucks meet us was a precaution if we had any more problems during the final descent and landing phase of the flight. After he was done with communicating our intentions with ATC and the flight attendant I positively exchanged controls back to him. I performed all the normal descent and approach check lists and informing tower on which engine was the problem. We landed with out further incident. After landing we asked CFR to make a visual inspection of the aircraft to make sure we had no exterior damage. There was no visual damage to the aircraft. I completed the after landing checklist; and the non-normal checklist for the left bleed closed. We proceeded normally to the gate; parked and de-planed the passengers as normal. The Captain then contacted Dispatch and Maintenance Control and informed them of the situation.

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.

Attributes
ACN	838509
Time
Date	200906
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
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 Not Flying First Officer
Qualification	Flight Crew Commercial
Experience	Flight Crew Last 90 Days 33 Flight Crew Total 1700 Flight Crew Type 1250
Person 2
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Less Severe

SF340 first officer experiences a mild compressor stall after leveling off at 11;000 ft during descent. Engine recovered on its own and the flight crew continued to their destination.