Failing an FAA checkride (the final practical test for a pilot's certificate) is a common hurdle in aviation and is officially documented with a "Notice of Disapproval." If you fail, the examiner will stop the test the moment a maneuver or knowledge area does not meet the "Airman Certification Standards" (ACS). You will receive credit for the portions you successfully completed, which remain valid for 60 days. After a failure, you must return to your flight instructor for "remedial training" in the specific areas where you were deficient. Your instructor will then issue a new endorsement stating you are ready for a retest. When you return to the examiner (the Designated Pilot Examiner or DPE), you typically only have to retake the tasks you failed, plus any tasks the examiner chooses to review for safety. While a failure is recorded on your permanent FAA record, it is rarely "career-ending" for aspiring airline pilots, provided it is followed by a successful pass and a commitment to improvement. Airlines generally view one or two checkride failures as a learning experience, though a pattern of multiple failures across different ratings can be a red flag during the hiring process at major carriers.