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An SF340 flight crew shut down the left engine and returned to the gate when it lost oil pressure at the start of the takeoff roll. Maintenance found the oil cap had not been properly secured.
| Attributes | |
| ACN | 869587 |
| Time | |
| Date | 201001 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Aircraft 1 | |
| Make Model Name | SF 340B |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Takeoff Taxi |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Oil Filler Cap |
| Person 1 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
I checked all the gauges as I normally do as we taxied onto the runway. Everything was normal and in the green. I applied takeoff power and checked the gauges. The left engine oil pressure dropped into the lower yellow arc. I reduced power and exited the runway. While turning off the runway the pressure recovered to the low end of the green arc so I figured it was safe to taxi clear with both engines. We parked in the pad to assess the situation. The oil pressure dropped back into the yellow and then the oil pressure warning went off. I shut down the engine and we ran the appropriate checklist. We wrote it up and taxied into the the gate and got a new plane for the flight. While walking around the new aircraft I noticed oil dripping from the engine we had shut down. A line mechanic had arrived at the plane and had a ladder set up by the engine. I looked in the engine compartment and could see the oil cap was not secure.
Original NASA ASRS Text
Title: An SF340 flight crew shut down the left engine and returned to the gate when it lost oil pressure at the start of the takeoff roll. Maintenance found the oil cap had not been properly secured.
Narrative: I checked all the gauges as I normally do as we taxied onto the runway. Everything was normal and in the green. I applied takeoff power and checked the gauges. The left engine oil pressure dropped into the lower yellow arc. I reduced power and exited the runway. While turning off the runway the pressure recovered to the low end of the green arc so I figured it was safe to taxi clear with both engines. We parked in the pad to assess the situation. The oil pressure dropped back into the yellow and then the oil pressure warning went off. I shut down the engine and we ran the appropriate checklist. We wrote it up and taxied into the the gate and got a new plane for the flight. While walking around the new aircraft I noticed oil dripping from the engine we had shut down. A line mechanic had arrived at the plane and had a ladder set up by the engine. I looked in the engine compartment and could see the oil cap was not secure.
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.