A learjet 60 flight crew shutdown the left engine shortly after takeoff due to low oil pressure and ...

Narrative:

After deice; we taxied to runway 36 and were cleared for takeoff. I applied full power and accelerated through V1 and rotated at vr. During rotation; the left 'low oil pressure' light illuminated. At positive rate; I commanded gear up. I verified with the gauge that the left engine oil pressure was indeed low and pulled the left engine to idle. At 1500 ft I verified that the left engine was indeed the culprit; double checked the good status of the right engine; and shut down the left engine. I treated the emergency as an engine failure (even though the engine had not failed) and called for the engine failure on takeoff after V1 checklist and declared an emergency with the tower. I turned on the autopilot and announced to the passenger that we had intentionally shut an engine down due to cockpit indications; and that we would be returning to land. The sic ran the engine failure checklist; followed by the engine securing checklist. I asked for a delay vector so we could run our checklists. As the sic finished the securing checklist; I asked for vectors to the ILS runway 36. I was notified that the ILS was OTS and was offered vectors for the RNAV runway 36. We discussed our overweight landing; and opted to land as soon as we could. Burning fuel would have taken almost an hour. The sic completed the descent; approach; and single engine landing checklist. We executed the approach and landed softly on runway 36. We taxied to our FBO and shut down. After shutdown; I exited the aircraft and noticed the tail covered in engine oil. I immediately notified our office; the chief pilot; director of operations; and director of maintenance. While I was on the phone; my sic and the mechanics inspected the engine and found that the oil dipstick was not secured. The mechanic admitted to the sic that he had checked the oil level. At that time; my sic told me that he had not checked the oil level during his preflight inspection. Normal company procedure is to check the engine oil 10 minutes after shutting down the engine. I normally check the engine oil if I know that maintenance has serviced the engine. At this time; we have no procedures in place to notify the pilots of routine maintenance action performed on the aircraft.

Original NASA ASRS Text

Title: A Learjet 60 flight crew shutdown the left engine shortly after takeoff due to low oil pressure and quantity. The oil fill cap had not been properly secured.

Narrative: After deice; we taxied to Runway 36 and were cleared for takeoff. I applied full power and accelerated through V1 and rotated at Vr. During rotation; the left 'low oil pressure' light illuminated. At positive rate; I commanded gear up. I verified with the gauge that the left engine oil pressure was indeed low and pulled the left engine to idle. At 1500 FT I verified that the left engine was indeed the culprit; double checked the good status of the right engine; and shut down the left engine. I treated the emergency as an engine failure (even though the engine had not failed) and called for the engine failure on takeoff after V1 checklist and declared an emergency with the tower. I turned on the autopilot and announced to the passenger that we had intentionally shut an engine down due to cockpit indications; and that we would be returning to land. The SIC ran the engine failure checklist; followed by the engine securing checklist. I asked for a delay vector so we could run our checklists. As the SIC finished the securing checklist; I asked for vectors to the ILS Runway 36. I was notified that the ILS was OTS and was offered vectors for the RNAV Runway 36. We discussed our overweight landing; and opted to land as soon as we could. Burning fuel would have taken almost an hour. The SIC completed the descent; approach; and single engine landing checklist. We executed the approach and landed softly on Runway 36. We taxied to our FBO and shut down. After shutdown; I exited the aircraft and noticed the tail covered in engine oil. I immediately notified our office; the chief pilot; director of operations; and director of maintenance. While I was on the phone; my SIC and the mechanics inspected the engine and found that the oil dipstick was not secured. The mechanic admitted to the SIC that he had checked the oil level. At that time; my SIC told me that he had not checked the oil level during his preflight inspection. Normal company procedure is to check the engine oil 10 minutes after shutting down the engine. I normally check the engine oil if I know that maintenance has serviced the engine. At this time; we have no procedures in place to notify the pilots of routine maintenance action performed on the aircraft.

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.

Attributes
ACN	872820
Time
Date	201002
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Aircraft 1
Make Model Name	Learjet 60
Operating Under FAR Part	Part 91
Flight Phase	Initial Climb Takeoff
Route In Use	Vectors
Flight Plan	IFR
Component
Aircraft Component	Oil Filler Cap
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 120 Flight Crew Total 4002.9 Flight Crew Type 448.5
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy

A learjet 60 flight crew shutdown the left engine shortly after takeoff due to low oil pressure and quantity. The oil fill cap had not been properly secured.