AET certification — how do you split study time between avionics systems and the regulatory knowledge?
I'm working toward the AET credential and I'm struggling with time allocation. I work on avionics bench repair full time so the hands-on systems knowledge is solid, but the FAA regulatory framework — Part 43, Part 65, applicable ACs — is something I've picked up piecemeal and never studied systematically.
The exam blueprint lists both technical and regulatory domains but doesn't give percentage weights clearly. I've been spending 70% of my study time on technical content because that's where I feel more confident, which might be backwards.
How did people who've passed recently balance those two areas?
Part 43 maintenance records requirements are heavily tested — what has to be in a maintenance entry, return-to-service documentation, who can sign off what. Memorize the specifics, not just the general concepts.
I used the AET Avionics Electronic Technicians practice questions to baseline where I actually stood. My technical scores were fine but my regulatory scores were 20 points lower — that gave me clear direction on where to focus.
Flip your ratio. The regulatory domain trips up most experienced techs because you know the procedures but don't know the specific regulatory citations. Spend 60% on regulatory and let your bench experience carry the technical side.
Don't underestimate the navigation systems section even if you're primarily a comms or instrument tech. The exam covers ILS, VOR, ADS-B, and TCAS at a level that requires real study if you haven't worked those systems recently.
Honestly, the regulatory stuff clicked for me once I stopped trying to memorize it and started asking "why would the FAA care about this?" For Part 43 it's really about who's authorized to do what and how you prove you did it. When I'd get a practice question wrong, I didn't just look up the right answer -- I'd read the actual reg and figure out what assumption I made that led me astray. That's slower, but you end up with a mental model instead of a pile of flashcards.
Since you've got the systems side locked down, I'd actually flip the usual advice and go heavy on regulatory review early. Don't split it 50/50. Spend the first few weeks just doing reg-heavy practice sets and dissecting every wrong answer until you understand the logic. Once the framework makes sense, it ties back to your bench experience anyway -- you'll recognize why certain maintenance record requirements exist because you've seen what happens when documentation is sloppy.
I just passed mine two months ago and honestly the regulatory stuff was where I was weak too. What actually clicked for me was treating Part 65 and Part 43 as a story about who can do what and when, not a list of rules to memorize. Once I stopped trying to memorize subparts cold and started asking "okay so who's accountable here and what's the paperwork trail" it all started making sense a lot faster.
The one thing that made the real difference was doing practice questions specifically on the regs after every study session, not before. I wasn't using them to learn, I was using them to find the gaps. You'll get a question wrong and think "I work avionics every day, how did I miss that" and then you realize it's a reg interpretation thing, not a technical thing. That's a different kind of wrong and it needs a different fix. Give yourself more time on the regs than you think you need. The systems stuff will hold.