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The pilots of a B737-300 observed an N1 overspeed condition of the #2 engine and elected to return to the departure airport. A successful landing was completed.
| Attributes | |
| ACN | 1099199 |
| Time | |
| Date | 201307 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Turbine Engine |
| Person 1 | |
| Function | Pilot Flying First Officer |
| Experience | Flight Crew Last 90 Days 264 Flight Crew Type 6000 |
| Person 2 | |
| Function | Pilot Not Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
We were at about fl 240; deviating in VMC conditions around some weather; when we felt the aircraft yaw to the left. I was the pilot flying and immediately noticed the #2 engine N1 had spiked from 94% to 107% along with the N1 overspeed light. I began pulling the #2 thrust lever back to attempt to get it back under the N1 limit. There was no egt exceedance during this event. After attempting to match up the N1's; there was about a four-inch thrust lever split. We accomplished the engine limit/surge/stall QRH checklist and determined it was best to return to [the departure airport]. We landed uneventfully about 15 minutes later.
Original NASA ASRS Text
Title: The pilots of a B737-300 observed an N1 overspeed condition of the #2 engine and elected to return to the departure airport. A successful landing was completed.
Narrative: We were at about FL 240; deviating in VMC conditions around some weather; when we felt the aircraft yaw to the left. I was the Pilot Flying and immediately noticed the #2 engine N1 had spiked from 94% to 107% along with the N1 Overspeed light. I began pulling the #2 thrust lever back to attempt to get it back under the N1 limit. There was no EGT exceedance during this event. After attempting to match up the N1's; there was about a four-inch thrust lever split. We accomplished the Engine Limit/Surge/Stall QRH Checklist and determined it was best to return to [the departure airport]. We landed uneventfully about 15 minutes later.
Data retrieved from NASA's ASRS site as of July 2013 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.