Recreational Pilot Licence · Practice

What does the oil pressure gauge indicate and what is the first action if oil pressure drops to zero in flight?

• A.Cylinder head temperature; if zero, open cowl flaps to increase airflow
• B.Fuel pressure at the carburetor; if zero, switch to auxiliary fuel pump
• C.Hydraulic pressure for the braking system; if zero, pump brakes to build pressure
• D.Engine oil pressure; if zero