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A G1159 engine had a compressor stall and RPM roll back at FL340 after climbing out of icing. The crew descended to keep the engine running and after it stabilized continued the climb to FL380.
| Attributes | |
| ACN | 852312 |
| Time | |
| Date | 200909 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Gulfstream II (G1159) |
| Operating Under FAR Part | Part 135 |
| Flight Phase | Climb |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Turbine Engine |
| Person 1 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 60 Flight Crew Total 7512 Flight Crew Type 3200 |
| Person 2 | |
| Function | First Officer Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine |
| Experience | Flight Crew Last 90 Days 60 Flight Crew Total 8100 Flight Crew Type 1500 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Inflight Event / Encounter Weather / Turbulence |
Narrative:
During climb to altitude we encountered IMC conditions. At approximately 8000 ft AGL we selected engine heat on. We continued to climb in IMC breaking out at 32000 ft MSL on the way to FL380. At approximately 34000 ft we experienced a compressor stall and rollback on the left engine. We selected igniters on and lowered the nose to maintain airspeed in effort to ensure the engine remained running. ATC was advised of an altitude deviation after we ensured the engine was indeed running normally with no indication of problems. This was accomplished at approximately 33000 ft. We then informed ATC that we were operating normally again and requested a climb to our cruise altitude. The most likely contributing factor in this event was prolonged operation in icing conditions.
Original NASA ASRS Text
Title: A G1159 engine had a compressor stall and RPM roll back at FL340 after climbing out of icing. The crew descended to keep the engine running and after it stabilized continued the climb to FL380.
Narrative: During climb to altitude we encountered IMC conditions. At approximately 8000 FT AGL we selected engine heat on. We continued to climb in IMC breaking out at 32000 FT MSL on the way to FL380. At approximately 34000 FT we experienced a compressor stall and rollback on the left engine. We selected igniters on and lowered the nose to maintain airspeed in effort to ensure the engine remained running. ATC was advised of an altitude deviation after we ensured the engine was indeed running normally with no indication of problems. This was accomplished at approximately 33000 FT. We then informed ATC that we were operating normally again and requested a climb to our cruise altitude. The most likely contributing factor in this event was prolonged operation in icing conditions.
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.