I took my first ASTB on Tuesday. I decided to take it after only about 2.5 weeks of studying (a couple hours a day maybe 5x a week and a few 5-6 hour sessions over the past weekend) to gauge where I stood and to give my time to retake, if need be, before submitting my SNA package. I ended up doing much better than I expected on my first try (71 9/9/9) and will obviously be submitting this score.
A little bit about myself: Prior USMC enlisted aircrew with a little more than 900 hrs. time, finishing an Aerospace Engineering degree at USC (SoCal, not Carolina) with a 3.25 GPA thats still slowly trending up, total military aviation/plane nerd (constantly watching documentaries and reading), FAA SEL private pilot, and Operations Analyst for a major defense company. Honestly after taking the test, I feel as if my background set me up almost perfectly to succeed. As far as study guides go, I primarily used the gouge here and the Barons book to study a little bit of everything. The majority of my time was spent relearning how to work with multiply/divide and work with fractions by hand again because in the engineering world I almost never don't use a calculator. I read probably 100+ pages of this thread which really helped calm my nerves about what I would see on the test and how I would feel like I was constantly bombing it. I don't have a whole lot to say about the test itself that hasn't been said here already (seriously just click back to page 250 or so and start reading), but am going to post some of my thoughts on the sections and can answer any questions you all have.
Math: Started easy but became challenging fairly quickly. Lots of D=RT problems comparing two peoples movement towards or away from each other. Had a couple fairly complicated solve for x or simplify questions. No logs, no binary. Got kicked out with maybe 3 minutes left.
Reading: Dry. Painfully so. Some passages obviously pulled from Navy pubs and others from what seemed like science text books. First couple were easy, and got much more cryptic and difficult quickly. Towards the end I was usually only able to narrow down to two options and make an educated guess. Kicked out with about 5 minutes left.
Mechanical: Honestly much harder (as an engineer) than I thought it was going to be. Had a couple straightforward ones and then a couple fairly complicated pulley questions. One pulley question asked for the names of a particular cascaded set-up (atkinson or wilkins or something else) which I had no idea whatsoever of. Almost no actual math done on this one, just focused on concepts. Ran the clock all the way down to 0:00 on this one.
ANIT: Straightforward, study the gouge on here, read about/understand airplanes, know a little bit of nautical info.
NATFI: Exactly what you expect, sometimes the two statements are easy to choose, sometimes niether is really true about you. In those cases I tried to answer based off of what the traits of the better naval aviations I flew with or what made more sense for what would make a successful pilot. The Navy/Marine Corps likes people who stick to checklists and follow flight rules.
UAV: Used the compass trick. Got one wrong and all the rest correct. Average time was probably somewhere in the 2-3 second range with a couple 4 sec. outliers.
Dichotic Listening: Not terribly difficult, the volume on the headphones was cranked up which I felt like helped. Missed one or two numbers just by clicking the wrong button (left for odd, right for even), but maybe it still registers that you heard a number read?
Vertical Tracking: Starts easy, gets worse. Probably was able to keep the target green for 70% of the excercise.
2-D Tracking: Tough, although I'm a pilot and play flight sims fairly reguarly the inverted axis with absolutely no outside reference (black screen in the test) makes it very counter-intuitive. Probably tracked for 45%-50% of the excercise.
Combined: Absolute mess. Just get through it. Had both green for<10% of the excercise.
Combined with Dichotic: Somehow easier than without the dichotic. Guess you're kind of distracted and go into a more auto-pilot mode. Probably tracked ~10% of the time and missed 1 or 2 of the number callouts.
Emergency Procedures: Write them down pocket checklist style, take 2 seconds to identify the problem and fix it while not really worrying about controlling the plane, get back to flying and put the control wheels back to a neutral setting before the next emergency. Didn't miss any procedures here and probably took ~4 seconds to fix the problems.
Good luck to everyone else taking the test. Hope I get to see you all in Pensacola!