If you want to build a career in aircraft maintenance or avionics, choosing the right qualification can be confusing. CAET, the FAA Airframe and Powerplant (A&P) certificate, and the EASA Part-66 Aircraft Maintenance Licence are all associated with aircraft technical careers, but they serve different purposes.
Some are designed to demonstrate technical knowledge, while others are regulatory credentials with defined maintenance privileges. The right option depends on where you want to work, the type of aircraft systems you want to work on, and your long-term career goals.
In this guide, JobsReach Aviation explains the differences between these three credentials, who they are suited to, and what aspiring aviation professionals should consider before choosing a pathway.
What Is CAET Certification?
The Certified Aircraft Electronics Technician (CAET) certification is offered by the Aircraft Electronics Association (AEA). It is an industry credential focused on foundational knowledge of aircraft electronics and avionics.
Avionics technicians work with aircraft electronic systems, including communications, navigation, instrumentation, and related equipment. Their work supports the safe and reliable operation of modern aircraft.
CAET can be worth considering if you are entering the avionics field, studying aircraft electronics, or looking for a way to demonstrate your foundational technical knowledge to prospective employers.
According to the AEA, the CAET examination consists of 100 multiple-choice questions, with a 90-minute time limit and a passing score of 70%. The association provides the official examination and certification information on its website.
An important distinction is that CAET is an industry certification, not an FAA mechanic certificate or an EASA Part-66 licence. It does not, by itself, grant regulatory aircraft maintenance certification privileges.
Why Technicians Choose the CAET Over an A&P
While the traditional FAA A&P certificate remains the broad industry standard for aircraft mechanics, the CAET has become highly popular for specific career tracks:
- Bypassing Heavy Schooling: To get an A&P, students must commit to 18–24 months of trade school or years of logged mechanical work. The CAET allows individuals with existing electronics experience to bypass this, passing a single online exam to prove their skills.
- Military-to-Civilian Transitions: Transitioning military electronics personnel often lack civilian sheet-metal or piston-engine experience. The CAET provides a quick, credible way to translate military avionics knowledge into civilian shop settings.
- Laser-Focused Specialization: Technicians who have zero interest in getting their hands dirty with heavy engines or structural rivets can take the CAET to step directly into high-tech, high-paying avionics
What Is an FAA A&P Certificate?
The FAA Airframe and Powerplant certificate is a US aviation mechanic credential issued by the Federal Aviation Administration.
It has two ratings:
- Airframe (A): Focuses on aircraft structures and associated systems.
- Powerplant (P): Focuses on aircraft engines and related systems.
A mechanic holding both ratings is commonly described as an A&P mechanic. Applicants must meet the FAA’s eligibility requirements and pass the applicable knowledge, oral, and practical examinations.
The FAA recognises qualifying practical experience as one route to eligibility. Applicants can also qualify through an FAA-approved Aviation Maintenance Technician School or an applicable military training pathway.
An A&P certificate can be relevant to careers with airlines, maintenance and repair organisations, and other aviation employers in the United States. However, the certificate’s privileges and limitations depend on the applicable FAA regulations and the work being performed.
Who should consider the A&P pathway?
People who want to pursue aircraft mechanic careers in the US and develop qualifications covering airframe maintenance, powerplant maintenance, or both.
What Is an EASA Part-66 Aircraft Maintenance Licence?
EASA Part-66 establishes licensing requirements for aircraft maintenance personnel within the applicable European regulatory framework.
Unlike CAET, Part-66 is a regulatory licensing system. The licence category determines the scope of maintenance and certification privileges available to its holder.
Two important categories for aspiring aircraft maintenance professionals are:
Category B1 — Mechanical maintenance
B1 covers relevant aircraft structures, powerplants, mechanical and electrical systems, and certain avionics work within the limits specified by the licence. Its subcategories distinguish between different aircraft and engine types.
Category B2 — Avionics maintenance
B2 focuses on aircraft avionics and electrical systems, including the applicable maintenance and certification tasks described in the regulations.
Obtaining a Part-66 licence generally involves meeting applicable basic knowledge and practical experience requirements. Additional aircraft type training and on-the-job training may be required for relevant type ratings.
EASA does not issue individual Part-66 licences. Applications are handled by the relevant competent national aviation authority.
Who should consider the EASA Part-66 pathway?
People planning to pursue licensed aircraft maintenance careers within the applicable European regulatory system, particularly those targeting mechanical or avionics maintenance roles.
CAET vs. A&P vs. EASA Part-66: The Main Differences
| Feature | CAET | FAA A&P | EASA Part-66 |
| Credential type | Industry certification | Regulatory mechanic certificate | Regulatory maintenance licence |
| Main focus | Foundational aircraft electronics knowledge | Airframe and powerplant maintenance | Aircraft maintenance within defined licence categories |
| Typical career interest | Entry-level avionics | Aircraft mechanic | Licensed mechanical or avionics maintenance |
| Regulatory system | Industry credential | United States — FAA | Applicable European system |
| Requirements | CAET examination | FAA eligibility and applicable examinations | Category-specific knowledge, experience and licensing requirements |
| Automatically provides aircraft maintenance certification privileges? | No | Within applicable FAA privileges and limitations | Within applicable licence privileges and limitations |
These qualifications are not interchangeable. An employer may also require relevant aircraft experience, additional training, specific type ratings, or organisational authorisation.
Can You Get CAET Without an A&P Certificate?
Yes. The AEA permits individuals to sit for the CAET examination without requiring an A&P certificate as a prerequisite.
This makes CAET an option for people who want to demonstrate foundational avionics knowledge without first completing the FAA A&P certification pathway.
However, passing the CAET examination does not automatically qualify someone to perform or certify every type of aircraft maintenance. The permitted work depends on the applicable regulations, the individual’s qualifications, and the requirements of the employer or maintenance organisation.
For anyone considering CAET, the important question is whether the certification supports the knowledge and career development required for their intended role.
Which Qualification Should You Choose?
The best choice depends on your career destination rather than which credential sounds most impressive.
Choose CAET if your main interest is avionics. It may help demonstrate foundational aircraft electronics knowledge, particularly if you are beginning your technical career.
Consider FAA A&P if you want to become an aircraft mechanic in the United States. The certificate offers airframe and powerplant ratings through the FAA’s established certification process.
Explore EASA Part-66 if you want to pursue licensed aircraft maintenance in Europe. Consider whether Category B1, B2, or another category best matches your intended work and career plans.
Before paying for training or examinations, check the current requirements with the relevant certification body or aviation authority. Also review actual job vacancies to understand which qualifications employers request in your preferred location.
How These Qualifications Can Affect Your Aviation Career
Choosing the right qualification is one part of planning your aviation career. Your interests, technical background, and long-term goals also influence the opportunities available to you. If you have an aeronautical engineering background and want to explore the wider range of roles in the industry, read our guide to career options after aeronautical engineering.
Aviation employers recruit for a wide range of technical positions, from entry-level avionics roles to experienced aircraft mechanics and licensed maintenance personnel.
The qualification required depends on the position. Some employers may consider applicants who have relevant training and practical skills, while others require a specific licence, rating, or documented experience.
For job seekers, this means it is worth researching vacancies before committing to a certification pathway. Look at the job’s location, required qualifications, aircraft type, experience level, and any additional training requirements.
Understanding these differences can help you make a more informed decision and focus your time and money on qualifications that support your career objectives.
Continuing Your Aviation Journey with JobsReach Aviation
JobsReach Aviation brings the aviation community together to network, communicate, exchange knowledge, share opportunities, and gain new insights. By connecting with people across different areas of the industry, you can discover new perspectives and take a more informed approach to your professional development.
Frequently Asked Questions
Is CAET equivalent to an FAA A&P certificate?
No. CAET is an industry certification focused on aircraft electronics knowledge. An FAA A&P certificate is a regulatory mechanic credential with defined privileges and limitations.
Is CAET equivalent to an EASA Part-66 licence?
No. CAET does not replace a Part-66 licence or provide the regulatory privileges associated with one.
Can I take the CAET exam without an A&P licence?
Yes. The AEA allows candidates to sit for the CAET examination without first obtaining an A&P certificate.
Is an FAA A&P certificate automatically recognised as an EASA Part-66 licence?
No. An FAA A&P certificate does not automatically become an EASA Part-66 licence. Applicants must meet the requirements of the relevant competent authority.
Which qualification is best for an avionics technician?
It depends on the intended role and location. CAET can demonstrate foundational avionics knowledge, while EASA Part-66 B2 is relevant to applicable licensed avionics maintenance roles in the European system. The FAA A&P pathway may also be relevant to avionics-related work, depending on the position and its requirements.
Do aviation employers require these qualifications for every maintenance job?
No. Requirements vary by job, jurisdiction, maintenance organisation, and the work involved. Some positions may require a particular licence or rating, while others may focus on training, skills, and experience.
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