Many instrument knowledge test questions are really chart-reading problems. The screen asks for a minimum altitude, a missed approach instruction, or a frequency, and the answer is somewhere on a figure printed in the testing supplement. Reading an unfamiliar chart excerpt under time pressure is a skill you build by practice.
Students who only see the figures as small images in an app often find the printed supplement slower to use on test day. Studying with your own copy means you already know how the figures are laid out and can spend the time on the problem.
ASA prints the instrument rating testing supplement as CT-8080-3F.
Quick answer: The ASA-CT-8080-3F is ASA’s printing of the FAA instrument rating knowledge testing supplement, the book of figures that instrument knowledge test questions refer to. It’s for instrument rating applicants who want to practice with the same reference used at the testing center, available on Skyfarer and at Skyfarer Shop.
At a glance
- What it is. The testing supplement for the instrument rating knowledge test.
- Part number. ASA-CT-8080-3F.
- What’s inside. The figures and reference material test questions point to by number.
- On test day. The testing center provides a copy; yours is for study.
Study habits that pay off
- Answer figure questions from the printed page. Build the habit of finding information on the full figure.
- Brief each chart like a real flight. Read it top to bottom the way you would before flying the procedure.
- Check the edition. The FAA revises supplements periodically; confirm your copy matches the current test and your prep material.
Pilot tip: When a question involves an approach chart, brief the whole procedure before reading the answer choices. You’ll catch the detail the question is testing far more often.
Where to buy
ASA Test Supplement – Instrument Rating (ASA-CT-8080-3F) is sold by Skyfarer Shop. Find it on the Skyfarer marketplace or order directly from Skyfarer Shop. Either link shows the current price, shipping options and return terms.
Frequently asked questions
Do I need to bring it to the knowledge test?
No. The testing center provides the supplement.
Does it include practice questions?
No. It holds the reference figures. Use it with a test prep book or software.
What’s the part number?
ASA-CT-8080-3F.
