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Short 360 flight crew aircraft reported experiencing erratic operation of the number 1 engine RPM. The engine was secured and a successful single approach and landing was accomplished at the destination airport.
| Attributes | |
| ACN | 1529536 |
| Time | |
| Date | 201803 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | Mixed |
| Aircraft 1 | |
| Make Model Name | Shorts SD-360 |
| Operating Under FAR Part | Part 135 |
| Flight Phase | Initial Approach |
| Route In Use | Vectors |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Propeller Control |
| Person 1 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 150 Flight Crew Total 6100 Flight Crew Type 730 |
| Person 2 | |
| Function | First Officer Pilot Flying |
| Qualification | Flight Crew Commercial Flight Crew Multiengine Flight Crew Flight Instructor Flight Crew Instrument |
| Experience | Flight Crew Last 90 Days 100 Flight Crew Total 1087 Flight Crew Type 200 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe |
Narrative:
Prior to departure we completed a preflight inspection including an autofeather test with no malfunctions noted. The flight proceeded normally until we intercepted the localizer. At that point we noticed the right RPM was approximately 1;475. We adjusted the prop lever to reduce RPM. The RPM continued dropping to approximately 1;150 before surging back to 1;425. At this point I (as pilot not fling (PNF)) ran the propeller malfunction checklist. The propeller continued surging between 1;700 and 1;100 RPM. At this point we elected to shutdown the engine. We were vectored back around to the localizer course while I performed the engine shutdown checklist. When the engine was secured we advised approach that we were ready for the approach. From this point we performed a successful one engine inoperative approach and landing. On post flight inspection of the right engine nacelle and propeller hub no defects of leaking fluid was noted.
Original NASA ASRS Text
Title: Short 360 flight crew aircraft reported experiencing erratic operation of the Number 1 engine RPM. The engine was secured and a successful single approach and landing was accomplished at the destination airport.
Narrative: Prior to departure we completed a preflight inspection including an autofeather test with no malfunctions noted. The flight proceeded normally until we intercepted the localizer. At that point we noticed the right RPM was approximately 1;475. We adjusted the prop lever to reduce RPM. The RPM continued dropping to approximately 1;150 before surging back to 1;425. At this point I (as Pilot Not Fling (PNF)) ran the Propeller Malfunction Checklist. The propeller continued surging between 1;700 and 1;100 RPM. At this point we elected to shutdown the engine. We were vectored back around to the localizer course while I performed the engine shutdown checklist. When the engine was secured we advised approach that we were ready for the approach. From this point we performed a successful one engine inoperative approach and landing. On post flight inspection of the right engine nacelle and propeller hub no defects of leaking fluid was noted.
Data retrieved from NASA's ASRS site 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.