FAQs Archives: ADX Test & Test Preparation

What is the “ADX” test?

‘ADX’ stands for Aircraft Dispatcher. This is a standardized 80-question, multiple choice examination taken at an authorized  testing center (such as Sheffield School). A passing score of at least 70% is required – this would meet one of the prerequisites for passing an FAA-approved Aircraft Dispatcher course. Other prerequisites are required.

Can I complete the ADX knowledge examination at a PSI testing center near me before showing up for the first day of the 5-week class or do you recommend that we take it there in Fort Lauderdale after classes start?

Although you’ll probably have to pay $175 (as of July 1, 2021) for the ADX test at a testing center, which is included in your 5-week course tuition here at Sheffield, we recommend to get it out of the way before arriving at school, ONLY IF YOU ARE READY TO TAKE THE TEST a few […]

How many questions are on the ADX test?

80, but you may receive 1-2 additional “experimental” questions which will not count.

If I know only 70% of the 1500-1600+ ADX question bank, will I pass the ADX test?

No. Try to learn or memorize the entire subject matter before attempting the actual test. 

I know you mentioned the 1500+ question list would be sufficient and I went through the entire study guide, but on your online (html) quizzes, a lot of the other questions were not on the quiz. I didn’t understand that and it makes me wonder if I truly must know all 1500+ questions (the entire study bank).

The online quizzes are our attempt to put all 1500+ questions into quiz form and it is still a major work in progress; in other words, don’t worry if you encounter and miss a few questions that are not on the html quizzes – those are a continuous work-in-progress. If you can answer all the […]

So it will cost me $325.00 to retake the ADX test if failed?

Yes! Fortunately, very few fail it, but if you can’t pass this basic “memory excercise”, knowing all the questions, answers, and possible choices ahead of time, with instruction and practice provided, then there are other issues.

What happens if I fail the ADX test?

You must either wait 30 days for a retake or be tutored (our tutoring is computerized and costs $100) and then be approved for the ADX retake ($175). We basically run you through a series of practice quizzes, then allow you to take the test a 2nd time when we can reschedule you. 

Are the 1400-1500+ questions you provide in 16 PDF files the big key to passing the ADX test or does one just have to have exceptional memory and knowledge of all those areas in the study guide before attending?

The PDF files should be all that you need. Any other questions not on that list, but found on the actual test would usually be repetitive or a rewording of what you’re already studying. There can always be different questions on the actual test that are not on the 1400-1500+ question list, but we haven’t had […]

I looked ahead at the (Gleim) chapters 9, 10, & 11 and it worried me as to how I can pass this Knowledge exam in the five weeks without having any knowledge about instrument flight and all the complicated maps, A/FDs and legends, etc.

One electronic workshop covers the HSI/RMI questions step-by-step. We’ll show you an easy method to getting the correct answer, but we must emphasize that these questions should never have been placed on the ADX test. A dispatcher must be familiar with instrument flight basics, but NOT ridiculous tricky pilot questions. So if you never really […]

I read in a forum that Sheffield covers none of the ADX in their course.

That is misleading at best, and a lie, at worst. We DO cover much of the ADX material in class, automatically, when we instruct our curriculum. For example, we instruct Weather Theory for the first 3 days. During those 3 days, you will learn material that will help you answer any of the popular weather questions, […]

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