SR22 pilot reported detecting a slight drop in RPM during climbout followed by an oil warning light ...

Attributes
ACN	1347433
Time
Date	201604
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	SR22
Operating Under FAR Part	Part 91
Flight Phase	Climb
Flight Plan	IFR
Component
Aircraft Component	Powerplant Lubrication System
Person 1
Function	Single Pilot
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Commercial
Experience	Flight Crew Last 90 Days 30 Flight Crew Total 1225 Flight Crew Type 409
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Procedural Maintenance Inflight Event / Encounter Other / Unknown

Narrative:

We departed in our SR22T with sufficient oil in engine (poh states 6-8 quarts; in engine 6.25 quarts). During the climb out at 5000 feet there was a slight RPM drop and soon thereafter the oil warning light came on. Oil pressure dropped and we decided to [advise ATC]; turn back where we landed without further incidence. On the ground we checked the aircraft and had only 2 quarts of oil on the ramp.the aircraft had a cylinder replaced under warranty at its annual in march and the break-in procedure has been followed. Before the annual the aircraft worked perfectly well. Something was wrong with the aircraft after the cylinder replacement; it used more oil than before. We had the aircraft checked a number of times at the repair station; including a flight with the mechanic. The aircraft performed well during that flight and after a slight adjustment of oil pressure by the repair station in march there was nothing speaking against the mission from in april. As a consequence of the oil pressure loss and the unplanned return in april we had the engine taken off the airplane and sent to the manufacturer for further inspection (continental).

Original NASA ASRS Text

Title: SR22 pilot reported detecting a slight drop in RPM during climbout followed by an oil warning light and low oil pressure.

Narrative: We departed in our SR22T with sufficient oil in engine (POH states 6-8 Quarts; in engine 6.25 quarts). During the climb out at 5000 feet there was a slight RPM drop and soon thereafter the oil warning light came on. Oil pressure dropped and we decided to [advise ATC]; turn back where we landed without further incidence. On the ground we checked the aircraft and had only 2 quarts of oil on the ramp.The aircraft had a cylinder replaced under warranty at its annual in March and the break-in procedure has been followed. Before the annual the aircraft worked perfectly well. Something was wrong with the aircraft after the cylinder replacement; it used more oil than before. We had the aircraft checked a number of times at the repair station; including a flight with the mechanic. The aircraft performed well during that flight and after a slight adjustment of oil pressure by the repair station in March there was nothing speaking against the mission from in April. As a consequence of the oil pressure loss and the unplanned return in April we had the engine taken off the airplane and sent to the manufacturer for further inspection (Continental).

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.