FAA · ADX
Aircraft Dispatcher (ADX) Knowledge Test practice exams
The FAA's Aircraft Dispatcher knowledge test — practice across every Part 65 knowledge area, with every answer explained.
Or read 15 sample questions with answers.
About the ADX exam
The Aircraft Dispatcher (ADX) knowledge test covers what a dispatcher needs to share operational control with the captain: regulations, meteorology and weather products, navigation, aircraft performance and weight and balance, communications, air traffic control, emergencies and practical dispatch decisions.
The test follows the knowledge areas in 14 CFR 65.55 and the course topics in part 65 appendix A. The FAA does not publish per-area percentages, so our domain weights are an estimate.
The real exam
Public information published by FAA. A ExamWize practice exam matches this format — it is not a copy of the exam's contents.
- Format
- 80 multiple-choice questions in 3.5 hours, at an FAA airman knowledge testing center. Minimum age to take the test is 21.
- Cost
- Testing fees are set by the testing center — check current pricing when you schedule.
- Scoring
- The passing score is 70 percent. Practice scores here use the same 70% pass line.
- Validity
- The knowledge test must have been passed within the preceding 24 calendar months when you apply for the certificate (14 CFR 65.55). The certificate itself requires age 23 and a practical test.
Practice by exam topic
ExamWize practice exams draw questions in these same proportions, from a bank of 595 ADX questions. Open a topic for what it covers and free questions with answers.
- Regulations· 132 questions22%
- Meteorology and Weather Hazards· 89 questions15%
- Weather Analysis and Forecasts· 77 questions13%
- Navigation· 60 questions10%
- Aircraft Systems, Performance and Weight and Balance· 91 questions15%
- Communications· 31 questions5%
- Air Traffic Control· 48 questions8%
- Emergency and Abnormal Procedures· 34 questions6%
- Practical Dispatch Applications· 33 questions6%
Who it's for
- Students in an FAA-approved aircraft dispatcher course
- Airline operations staff moving into dispatch
- Pilots adding a dispatcher certificate
How to prepare
- Know Part 121 dispatch rules cold: releases, alternates, fuel and redispatch.
- Practice decoding METARs, TAFs, PIREPs and SIGMETs quickly and accurately.
- Work weight and balance and performance problems until the arithmetic is automatic.
- Review emergency authority, NTSB reporting and security responsibilities.
See the free ADX cheat sheet for a one-page domain summary, and the content policy for how these questions are written.
Free ADX practice resources
- 15 free ADX practice questionsSpread across the exam's topics, each with the answer and an explanation for every option.
- Free 10-question diagnosticA quick, scored check of where you stand, with no account needed.
- ADX cheat sheetThe topics and the facts that come up most, on one page.
- ADX study guideHow to plan your preparation.
ADX exam FAQ
- What is the format of the ADX exam?
- 80 multiple-choice questions in 3.5 hours, at an FAA airman knowledge testing center. Minimum age to take the test is 21.
- How much does the ADX exam cost?
- Testing fees are set by the testing center — check current pricing when you schedule.
- How is the ADX exam scored?
- The passing score is 70 percent. Practice scores here use the same 70% pass line.
- How long is the credential valid?
- The knowledge test must have been passed within the preceding 24 calendar months when you apply for the certificate (14 CFR 65.55). The certificate itself requires age 23 and a practical test.
- How many ADX practice questions does ExamWize have?
- 595 original practice questions, drawn into full practice exams in the same format and domain proportions as the real ADX. Every option has its own explanation.
- Are these real ADX exam questions?
- No. Every question is original, written from FAA's public content outline — never copied from the real exam or from exam dumps. They match the real exam's format, not its contents.
- Can I try ExamWize for free?
- Yes. The free diagnostic has 10 ADX practice questions with a full explanation for every answer, and no account is needed.