Airworthy.
Fly the needles.
The fastest, most rigorous study companion for the FAA Instrument Rating written. Every question cited to the FAA handbooks and 14 CFR — no guessing, no folklore.
Cited to the handbook. Every answer.
330 fully-cited questions
Every Area of Operation in FAA-S-ACS-8C, with answers grounded in 14 CFR and the FAA handbooks — not folklore from a 20-year-old prep book.
Source-locked citations
Every answer ships with a sourceId, locator, and SHA-256 hash so you can verify it against the FAA handbook or eCFR section it came from.
90 smart SRS flashcards
Spaced repetition tuned to instrument-rating mental models. The concepts you almost forget come back right before you do.
60-question practice exam
Drawn proportionally from every IRA topic and graded against the 70% pass mark — know if you're ready before you book the test.
Streaks, levels, badges
Five-minute sessions that compound into mastery. Daily goals and earned badges turn the IRA grind into a habit you keep.
Offline & private
No account, no tracking, no ads. Works on the ramp, in a hangar, or anywhere your training takes you.
Every IRA Area of Operation, covered.
Aligned to FAA-S-ACS-8C. Questions ship with citations to the Instrument Flying Handbook (8083-15B), Instrument Procedures Handbook (8083-16B), Aviation Weather Handbook (8083-28B), and current 14 CFR via eCFR.
Frequently asked questions.
Which exam does Airworthy: Instrument Rating cover?+
It covers the FAA Instrument Rating – Airplane (IRA) knowledge test, aligned to the latest Airman Certification Standards (FAA-S-ACS-8C).
How many questions and flashcards are included?+
330 questions across every Area of Operation in FAA-S-ACS-8C, 90 spaced-repetition flashcards covering the concepts you most often need to recall, and a 60-question full practice exam scaled proportionally to the real IRA.
Are answers cited to FAA sources?+
Yes. Every question and flashcard cites the FAA Instrument Flying Handbook (FAA-H-8083-15B), Instrument Procedures Handbook (FAA-H-8083-16B), Aviation Weather Handbook (FAA-H-8083-28B), the Airman Certification Standards (FAA-S-ACS-8C), or current 14 CFR Parts 61 and 91 via eCFR — with a sourceId, locator, and SHA-256 hash so you can verify the source.
What's included for free vs. Full Access?+
The free tier includes a preview so you can decide if Airworthy clicks for you. Full Access is a one-time $19.99 unlock for the complete 330-question bank, all 90 flashcards, and the full 60-question practice exam. No subscription.
Does it work offline?+
Yes. Airworthy is offline-first — every question, flashcard, and practice exam is bundled with the app. No account, no tracking, no internet required after install. Available on iPhone via the App Store and on Android via Google Play.
Pass your IRA written.
Airworthy: Instrument Rating is live on the App Store and Google Play. Free to try, $19.99 one-time for the full bank, flashcards, and practice exam.