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A cessna 402 captain reported fluctuating fuel flow and engine roughness during climbout. Though the engine recovered somewhat he elected to make a precautionary landing at the departure airport.
| Attributes | |
| ACN | 1476552 |
| Time | |
| Date | 201708 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Aircraft 1 | |
| Make Model Name | Cessna 402/402C/B379 Businessliner/Utiliner |
| Operating Under FAR Part | Part 135 |
| Flight Phase | Climb |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Fuel Flow Indication |
| Person 1 | |
| Function | Pilot Not Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe |
Narrative:
First officer (first officer) was climbing through approximately 7800 ft for 10;000 ft during our instrument scan we both noticed a drop in fuel flow from 120 to ~50 on the left engine. This was accompanied by a loss in engine RPM; fluctuation in manifold pressure and roughness. The engine felt like it was shutting down but then the fuel flow rose back to 120; then fluctuated around 100. It then stabilized and we made the decision to return to ZZZ; no emergency was declared and the flight landed without further incident. The event happened over 5-10 seconds.
Original NASA ASRS Text
Title: A Cessna 402 Captain reported fluctuating fuel flow and engine roughness during climbout. Though the engine recovered somewhat he elected to make a precautionary landing at the departure airport.
Narrative: First Officer (FO) was climbing through approximately 7800 ft for 10;000 ft during our instrument scan we both noticed a drop in fuel flow from 120 to ~50 on the LEFT engine. This was accompanied by a loss in engine RPM; fluctuation in Manifold Pressure and roughness. The engine felt like it was shutting down but then the fuel flow rose back to 120; then fluctuated around 100. It then stabilized and we made the decision to return to ZZZ; no emergency was declared and the flight landed without further incident. The event happened over 5-10 seconds.
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.