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.
Pass your IRA written.
Airworthy: Instrument Rating is live on the App Store. Free to try, $19.99 one-time for the full bank, flashcards, and practice exam.