This question book was developed by the Federal Aviation Administration (FAA) for testing applicants who are preparing for certification as airline transport pilots, aircraft dispatchers, or flight navigators. The publication contains several innovative features that are a departure from previous FAA publications related to air carrier personnel certification written tests: (1) testing materials related to the pilot who seeks to advance to the airline transport pilot level are contained in this book, rather than in the previous two separate books; and (2) the test questions are multiple choice, but have three, rather than four, alternative answers, to allow the use of new scoring techniques. The book has been developed to test applicants in the following knowledge areas: air transport pilot-airplane (in two parts), added rating--airplane, helicopter, added rating--helicopter; aircraft dispatcher; and flight navigator. Extensive appendixes provide statistical and background materials needed to answer the questions, including 157 figures. (Answers to the questions are not included, nor are they published by the FAA.) (KC)