If you fail your checkride, your instructor will inform you that you have failed a maneuver. You then have the option to continue your checkride and finish, even though you know you have failed, or return to the ground straight away.
Many people choose to continue the checkride to get the most out of their session. However, if you would simply prefer to end the session early you can do so. The instructor might also decide to cut the session early if they do not feel comfortable continuing.
Once you’re back on the ground, you and your instructor will go through the maneuvers that you failed. You will then need to work with them until they are happy that you can pass the retest. They will give you an endorsement which allows you to schedule another appointment.
As long as the test has been completed within 60 days of failing the initial session, your examiner will complete a form that states you will receive credit from the original areas that you passed in the initial test.
You will retake the part of the checkride that you failed. This might take as little as half an hour if it was only one or two maneuvers. Your instructor will then tell you whether you passed or failed your second attempt at the checkride.