Understanding the DGCA CAR-66 Exam Structure
DGCA CAR-66 is the Indian regulatory framework governing Aircraft Maintenance Engineer licences, closely modelled on EASA Part-66. The licence is divided into categories: Category A (certifying mechanic), Category B1 (mechanical systems and structures), and Category B2 (avionics and electrical systems). Each category requires passing a specific set of knowledge modules out of the 14 available.
Each module examination consists of multiple-choice questions (MCQs). The pass mark is 75% for Level 1 and Level 2 questions, and candidates must pass every module individually — there is no aggregate scoring. A failure in one module does not affect others, but it does mean re-sitting that module and paying the examination fee again.
The 14 CAR-66 Modules at a Glance
The full syllabus covers 14 technical modules. Understanding which modules apply to your licence category is essential before you begin:
- Module 1 — Mathematics
- Module 2 — Physics
- Module 3 — Electrical Fundamentals
- Module 4 — Electronic Fundamentals
- Module 5 — Digital Techniques / Avionics Systems
- Module 6 — Materials and Hardware
- Module 7 — Maintenance Practices
- Module 8 — Basic Aerodynamics
- Module 9 — Human Factors
- Module 10 — Aviation Legislation
- Module 11 — Aeroplane Aerodynamics, Structures and Systems (B1)
- Module 13 — Aircraft Aerodynamics, Structures and Systems (B2)
- Module 15 — Gas Turbine Engine
- Module 17 — Propeller
Step-by-Step Preparation Strategy
1. Download and Study the Official Syllabus First
Before opening any textbook, download the official DGCA CAR-66 syllabus (AMC1 Appendix II) from the DGCA website. Every question in the exam is mapped to a specific learning objective in this document. Study without the syllabus in hand is unfocused — you risk spending hours on topics that carry one or two marks while neglecting high-weightage areas entirely.
2. Build a Module-by-Module Study Plan
Do not attempt to study all modules simultaneously. Pick the module you are scheduled to sit first and dedicate 100% of your study time to it until you are ready. Within each module, divide the syllabus into sub-topics and allocate specific days to each. A typical B1 candidate should budget 3–6 weeks per module depending on prior knowledge and the module's complexity.
💡 Pro tip: Start with Module 9 (Human Factors) and Module 10 (Aviation Legislation). These are conceptual rather than mathematical, and clearing them early builds confidence and momentum for the harder technical modules.
3. Use Mock Tests from Day One — Not Just at the End
The most common preparation mistake is studying passively for weeks and only attempting mock tests in the final few days. Mock tests serve two purposes: they reveal gaps in your knowledge early enough to fix them, and they build the exam temperament needed to perform under time pressure. The DGCA CAR-66 exam allows approximately 75 seconds per question — candidates who have never practised under time conditions consistently underperform relative to their knowledge level.
Start attempting module-specific MCQs after covering each sub-topic, not after finishing the entire module. This spaced-practice approach has been shown to improve retention significantly compared to end-of-module cramming.
4. Analyse Every Wrong Answer
A wrong answer in a mock test is more valuable than a correct one — if you understand why you were wrong. For every incorrect answer, trace it back to the specific learning objective in the syllabus, re-read that section, and attempt two or three similar questions to confirm you have understood the concept. Candidates who skip this step find themselves making the same errors in the actual examination.
5. Stay Current with Regulatory Updates
Module 10 (Aviation Legislation) is updated periodically to reflect changes in DGCA circulars, airworthiness directives, and CAR amendments. Candidates who studied legislation content from outdated materials have been caught out by questions referencing recent regulatory changes. Check the DGCA website monthly for new civil aviation requirements and airworthiness directives relevant to your aircraft category.
Common Mistakes That Lead to Re-sits
- Relying solely on photocopied question banks without understanding the underlying concepts
- Neglecting to time practice sessions — speed is a skill that must be trained separately
- Studying from unofficial or outdated syllabi
- Attempting all modules simultaneously and spreading preparation too thin
- Ignoring weak sub-topics and hoping they won't appear in the exam
How AlwaysAME Supports Your CAR-66 Preparation
AlwaysAME provides module-wise question banks covering all 14 CAR-66 modules, timed mock examinations calibrated to the actual exam pace, and performance analytics that pinpoint your weakest sub-topics. All questions are original, written against the official AMC1 Appendix II learning objectives, and reviewed by licensed engineers. The platform is completely free — no subscription, no paywall.
Whether you are beginning Module 1 or preparing for your final module before licence application, AlwaysAME is designed to give you the structured, focused practice that translates directly into exam success.
🎯 Ready to start? Open AlwaysAME and begin your first timed mock test today. Consistent daily practice of even 20–30 questions makes a measurable difference within two weeks.
