This eleventh edition of the Instrument Pilot Oral Exam Guide aligns with the Airman Certification Standards (ACS), with new and expanded content for the preflight, departure, enroute, and arrival phases of instrument flight as well as scenario-based training. Additional study material for Instrument Instructor (CFII) candidates and guidance for instrument proficiency checks (IPC) make this book valuable both for instructors and for pilots preparing for the Instrument checkride or an IPC.