What ACS Logbook is
ACS Logbook (full name on the App Store: ACS Logbook: A&P Test Prep) is a study aid for the FAA aviation mechanic knowledge tests: General, Airframe and Powerplant. It combines original practice questions, subject-based accuracy tracking, timed tests, an oral and practical checklist, and working calculators.
Paste or type the ACS codes from your Airman Knowledge Test Report (AKTR) to identify their subject areas, see your logged accuracy, and drill those subjects. The ACS map lists all 40 Aviation Mechanic ACS subject areas and the number of questions the app has for each. The question bank contains 185 questions across nine subject areas.
The app is independent and is not affiliated with, endorsed by, or sponsored by the Federal Aviation Administration (FAA). It contains no actual FAA test questions. Passing the knowledge tests is only one part of mechanic certification; the app does not replace the experience, oral and practical requirements.
Questions ACS Logbook answers
- How can I study the ACS codes on my test report? Paste or type your AKTR codes to map them to subjects, review your logged accuracy, and drill only those subjects.
- Can I choose subjects without a test report? Yes. The ACS map lists all 40 subject areas and lets you add a subject without a report.
- Why was my practice answer wrong? Each question has a worked explanation and a note explaining both wrong choices.
- How can I track my General, Airframe and Powerplant study progress? Each section has its own logbook, status stamp, and a line explaining what is still missing from the app's sign-off rule.
- Can I prepare for the oral and practical too? The checklist has 27 explain-or-demonstrate topics, self-ratings, and space for your notes.
Features
- AKTR weak-code drill: enter codes such as AM.I.H.K3 to identify their ACS subjects, see logged accuracy, and focus practice on those subjects.
- ACS map: all 40 subject areas, with the app's question count for each.
- Original question bank: 185 three-choice questions across General, Airframe and Powerplant, covering nine subject areas. Every question is tagged to its ACS subject.
- Answer explanations: a worked explanation for every question and a “why this answer is wrong” note under each wrong choice.
- Elimination drill: strike an answer before choosing. Striking the correct answer counts as a miss.
- Three logbooks: separate General, Airframe and Powerplant covers, each with a block gauge and a Ready to test, In work, or No entries stamp.
- Study sign-off: at least eight logged answers in every subject at 75% or better, plus 80% overall. This app rule is stricter than the 70% pass line and does not guarantee a pass.
- Timed practice: nine-question section tests and a full three-test simulation with 27 questions in 60 minutes.
- Oral and practical checklist: 27 topics across the three sections, personal notes, and four self-ratings: Not yet, Can explain, Can demonstrate, and Exam ready.
- Toolkit: torque conversion with extension-adapter correction, weight and balance with CG limits, temperature and pressure conversion, and an AN hardware decoder.
- Offline study: everything is stored on your device. Internet access is needed only to purchase or restore the unlock.
How it works
- Paste or type the ACS codes from your Airman Knowledge Test Report, or add a subject from the ACS map.
- Drill those subjects, review worked explanations and wrong-choice notes, and track your logged accuracy.
- Review the General, Airframe and Powerplant logbooks for what is still missing from the study sign-off rule. Use the timed tests and oral and practical checklist alongside your question practice.
Free sample and full unlock
| Feature | Free version | A&P Mechanic Full Unlock |
|---|---|---|
| Practice questions | Sample of 5 | All 185 |
| ACS map | Included | Included |
| Oral and practical checklist | Included | Included |
| Toolkit | Included | Included |
| Weak-code drill across the full question bank | Requires unlock | Included |
| Timed tests | Requires unlock | Included |
| Ads | None | None |
| Subscription | None | None |
A&P Mechanic Full Unlock is a single one-time purchase. An internet connection is needed to purchase or restore it.
FAQ
Can ACS Logbook help me study the codes on my FAA test report?
Yes. Paste or type the ACS codes from your Airman Knowledge Test Report. The app maps them to ACS subject areas, shows your logged accuracy in each, and drills only those subjects. The full unlock enables the weak-code drill across all 185 questions.
Do I need an AKTR to choose what to study?
No. You can add a subject from the ACS map without a report. The map lists all 40 Aviation Mechanic ACS subject areas and the number of questions the app has for each.
Does the question bank cover every ACS subject area?
The 185 original questions cover nine subject areas across General, Airframe and Powerplant. The ACS map lists all 40 subject areas and shows the app's question count for each.
Does ACS Logbook explain why an answer is wrong?
Yes. Every question has a worked explanation and a “why this answer is wrong” note on both wrong choices, shown directly under the choice.
What does the Ready to test stamp mean?
It reflects the app's study sign-off rule: at least eight logged answers in every subject at 75% or better, and 80% overall. Each logbook tells you what is still missing. The stamp does not guarantee a pass or replace certification requirements.
What timed practice tests are included?
The full unlock includes timed nine-question section tests and a full three-test simulation with 27 questions in 60 minutes.
Can I use it for oral and practical preparation?
Yes. The checklist includes 27 explain-or-demonstrate topics across the three sections, your own notes, and four self-ratings: Not yet, Can explain, Can demonstrate, and Exam ready. It does not replace the oral and practical requirements.
What can I use for free?
The free version includes five sample questions, the ACS map, the oral and practical checklist, and the toolkit. A&P Mechanic Full Unlock adds all 185 questions, the weak-code drill across the full bank, and timed tests.
Is there a subscription or advertising?
No. The full unlock is a single one-time purchase. There is no subscription and no ads.
Does ACS Logbook work offline?
Yes. Everything is stored on your device. An internet connection is needed only to purchase or restore the unlock.
Is ACS Logbook an official FAA app with actual test questions?
No. It is an independent study aid, not affiliated with, endorsed by, or sponsored by the FAA. Its questions are original and written to the subject areas of the published Aviation Mechanic Airman Certification Standards. No actual FAA test questions are included.
How can I contact support?
Email [email protected].