Who is responsible for ensuring that an aircraft is maintained in an airworthy condition?

Who is responsible for ensuring that an aircraft is maintained in an airworthy condition?

The owner or operator is primarily responsible for maintaining the aircraft in an airworthy condition.

However it is always the PIC responsibility to make sure the aircraft is airworthy before any flight.

How can you find out if the aircraft is in an airworthy condition as the PIC?

By looking in the maintenance records, aircraft and engine logbooks.