(Part 2) Best products from r/flying

I'm just starting down the PPL journey myself, and here are a few links that have helped me out along the way...


MZeroA Flight Training Jason does a really great job dissecting everything into it's component parts.

Our very own Schteevie may be better known to you as FlightChops and puts together some really great videos about his flight experiences. He's Canadian, and thus super critical of himself, but we won't hold that against him. ;) Seriously though, the amount of humility this guy shows in his videos is awesome and really "grounds" the series. (no pun intended.)

ShareAviation.com is yet-another-resource that a few of the aforementioned pilots are a part of. It's more like a gathering of people, but you can use this as a spring-board to find a wealth of valuable information.

A few books that have also helped me along the way:

FAA Airplane Flying Handbook is a little light on the technical details, but details flight maneuvers you should work on and whatnot. Link goes to Amazon.

FAA's Pilot's Handbook of Aeronautical Knowledge is a lot more dense, but dives into a lot more of the mechanical concepts (and math!) of flying. Link goes to Amazon.

Oh boy, one of my favourite topcis! I'm doing something similar right now, trying to do some feasibility studies for an electric homebuilt! I'll try to answer to the best of my abilities, hopefully others on this forum.

My answer is based almost entirely on this book: General Aviation Aircraft Design: Applied Methods and Procedures and a little more on Simplified Aircraft Design for Homebuilders. The math isn't too tricky, though it helps if you have some background in aerospace or aeronautics. There are some pretty decent courses on EdX if you want to explore those further.

The answer depends significantly on what you want your aircraft to do (slow 4-seater? fast 2-seater?), and some estimates on the shape of your aircraft. I'll summarize just the necessary parts for this question.

The other thing to note is: there isn't much different about how an electric aircraft flies, the only difference comes in when you need to calculate the range. In a typical piston aircraft, the fuel is burned off and weight goes down as the flight continues, which helps increase the overall range. For an electric, sadly, that's not an option (though electrics have other benefits!)

To find the range of an electric aircraft, you need to know the following things:

• The estimated max. gross weight of the aircraft (W)
  
• The estimated empty weight of the aircraft (W_e)
  
• The estimated payload of the aircraft (W_p)
  
• The desired cruise speed
  
• The desired cruise altitude
  
• Estimated wing-loading for the aircraft
  
• Some airplane-specific parameters like parasite drag coefficient and induced drag coefficient.
  
• The specific energy of your battery (how much energy per kilogram does it store?)
  
• The Thrust/Weight ratio for the aircraft (which determines how much thrust is required per kilo of the aircraft total weight)
  
  As you can see, the first several requirements are based on what you want: what are your requirements? The airplane-specific parameters, like drag coefficients, can be estimated using existing aircraft in the same class. Raymer's book has great resources for estimates for several parameters based on many comparable aircraft. The last few are calculated using some basic formula.
  
  Let's do a sample calculation (and you can check the numbers to make sure they're reasonable):
  
  
• I guess the max. gross weight of my aircraft is 3400lbs. This is on the high end for single-engine aircraft, comparable to the very nicely designed Cirrus SR-22. But I want to carry a lot of payload and batteries, so I need the max. gross weight. So, W = 3400
  
• The estimated empty weight of the aircraft, as per Raymer, is W_e = 1.15*pow(W,0.91) = 1880 pounds. However, this is for piston-engine aircraft. A piston engine is much, much heavier than an electric engine for the same HP. For comparison, the SR-22 has a 310hp engine, which weights 475lbs as per the spec sheet. For the same horsepower, an electric engine only weighs about 170lbs. So, the actual empty weight estimate is W_e = 1880 - 475 + 170 = 1575lbs. Not bad!
  
• The estimated payload of the aircraft: W_p = 800lbs. I want 800lbs for 4 160 pound adults, 40lbs of baggage, and 100lbs spare margin in case people are heavier than they claim.
  
• From the above estimates, I can calculate how much space I have left for my battery: W_b = W - W_e - W_p = 3400 - 1575 - 800 = 1025lbs.
  
• I want to cruise at 8000ft. Most aircraft's cruise numbers are stated for altitudes of 5000-8000ft, so this isn't too bad. The air density at this height is 0.001869 slugs/ft^3.
  
• I want to cruise at 120kts. Might seem slow, but for now it'll do. This is equal to 202ft/s.
  
• Estimated wing-loading: Wing-loading refers to how much weight is being supported by each square foot of the wing. So, you need to roughly guess your wing area. We can use a reference here, the SR22 has a wing area of 145 sq. ft. With a weight of 3400lbs, the wing loading is 23.4 lbs/sqft.
  
• Estimated induced drag factor: This represents how much drag your aircraft produces just for being in the air. It depends on the aspect ratio of the aircraft, which, again, for the SR22, is ~10, and the induced drag factor k = 0.042
  
• Estimated parasite drag factor: this represents how much drag your aircraft produces because of its shape. As per Raymer, an estimate for homebuilt aircraft is 0.0265. The RV-7 comes in at 0.0175, so 0.0265 is a "safe" high estimate.
  
• Specific energy: This is how much energy the batteries store per pound of weight. Obviously, the higher the specific energy the better for us! Today, the specific energy for most production batteries is in the range of 220-260Wh/kg. There are some reports of batteries up to 350-400Wh/kg, but let's stick with 250Wh/kg for now. With this specific energy, the battery capacity is E = Specific energy battery_weight_in_kg = 250 (1025/2.2) = 121136Wh = 121.1KWh
  
• Thrust/Weight ratio: This is calculated from a formula that uses air density at cruising altitude, the induced and parasite drag factor, etc. The actual formula is a little difficult to type out here, but for these parameters, the T/W ratio comes out to around 0.069.
  
• Required thrust: this is simply T/W W = 0.069 3400 = approx. 234lbs of thrust for cruise.
  
• Required power: this is the power the engine must put out to provide the required thrust. Assuming propeller efficiency is 0.9, this comes out to about 71KW
  
• Possible endurance: Our battery capacity was 121KWh. For an engine that consumes 71KW, this means about 1.7 hours of endurance.
  
• Range: Simply cruise speed cruise endurance = 120 1.7 = 204 nm.
  
  I have not typed out the formulae here, let me know if you'd like me to, I can do so later today after work. The biggest thing to note (that isn't mentioned here) is that aircraft geometry is extremely important. If you were to increase the wing-loading and the aspect ratio, your range goes up dramatically. For example, if I increase my wing loading to 34lbs/sq ft and the aspect ratio to 16, the endurance goes up to 2.2 hours! Of course, that has other penalties: higher aspect ratios mean longer wings, which can increase weight because they need to be long and strong. A higher wing loading means smaller wings, which means if you lose an engine and aren't able to maintain airspeed, that small wing might have trouble keeping you afloat. I think it also hurts the stall speed.
  
  Other note: this is for a conventional aircraft configuration. Electric aircraft should ideally exploit the properties of electric motors: that they can be extremely small! You don't need to have one massive engine up front, you can have several small ones on the wing. This reduces drag over the fuselage and increases the dynamic pressure over the wings, which in turn increases the lifting capacity dramatically. For reference, check out the X-57 Maxwell NASA is building using this concept (which they call "Distributed Electric Propulsion").

Buy this book immediately: http://www.amazon.com/Pilots-Handbook-Aeronautical-Knowledge-FAA-H-8083-25A/dp/1619540207/ref=pd_sim_b_7. It pretty much has everything you want to know about all aspects of flight. Great continuous, repeated read.

After you're flying for a bit, right around when you're at solo status (either pre or post XC), you'll want to get this book: http://www.amazon.com/Visualized-Flight-Maneuvers-Handbook-Handbooks/dp/1560275219/ref=pd_sim_b_48. For your PPL license you'll need to demonstrate a number of maneuvers with proficency, and this is a great reference for all of them.

When you're studying for your PPL written, grab this book:http://www.amazon.com/Private-Pilot-Test-Prep-2014/dp/1560279788/ref=pd_sim_b_23. Helped me a ton.

When you're getting ready for your checkride, get this book: http://www.amazon.com/gp/product/1560279494/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1.

Also, get an iPad and Foreflight. While you'll hear a ton from pilots about getting started too early with electronics during your training, the main thing to steer clear of is using it for in-flight navigation and relying on it for GPS. You have to learn dead reckoning, pilotage and old(er) school navigation like VORs. It's great for flight planning and the digital charts are incredible but I still plan out my flights using a paper flight plan. Also, it has a documents section that's just fantastic for downloading good FAA reads like the FAR/AIM, your aircraft's POH and a ton of other downloadable documents.

Love to hear some other suggestions.

The ice has melted and it's time for many adventures in 2018!

Just picked up two more Rugged Air RA200 Black General Aviation Pilot Headsets for pax #5 and #6. I now have headsets for both children + adults in the 210. I had purchased Rugged Air RA250 Red General Aviation Child Headsets and they have worked out great!

Purchased a 15 cu ft. SkyOx dual regulator O2 system with two cannulas from Sportys. My wife is pregnant and we thought we would be conservative and keep her on O2 on the next few trips. Thought why not get a dual in case I want a sip. I get mild headaches after long trips at altitude.

I need to get two more SpaceX luggage tags!

I'm using Foreflight on a iPad Mini 4 with GPS + Cellular. Pair that with a Stratus 2s and it's a great way to add a safety margin. I use the Boss A20 (without bluetooth) and my wife uses my old Dave Clarks. I carry a ACR PLB-375 ResQLink+ 406 Buoyant Personal Locator Beacon and a backup transceiver with a backup battery for that.

Trips I'll be taking and posting on my YouTube channel this year:

1. Cleveland, OH to Ocracoke, NC
   
2. Cleveland to Butler County Regional (Top Golf in West Chester, OH)
   
3. Cleveland to Nags Head, NC (KMQI)
   
4. Nags Head, NC to Portland, ME
   
5. Portland, ME to Bar Harbor, ME
   
6. Cleveland, OH to Marion, IN
   
7. Cleveland, OH to Greenwood, IN
   
   Should be some fun adventures and I hope to create some nice videos for you all!
   

• Federal Aviation Regulations / Aeronautical Information Manual
  
• Pilot's Handbook of Aeronautical Knowledge
  
• Airplane Flying Handbook
  
• Private Pilot Airplane Airmen Certification Standards
  
• Private Pilot Oral Exam Guide
  
  Keep in mind all the information you need to pass is available for free from the FAA. But I like having the books and in the grand scheme of things they're really cheap. The FARs are the regulations you need to know, mostly parts 61 and 91. The AIM has a ton of good information in it as well. All stuff that could show up on your written exam. The PHAK is going to be where a lot of your written material comes from. If you know the information in there forwards and backwards you'll do great.
  
  The ACS is the practical standards to which you'll be judged on the check ride. How close do you need to hold altitude? How close do you need to hold that 45 degree bank angle? All found in the ACS.
  
  The Oral Exam Guide's usefulness will vary based on who gives you your checkride. My DPE literally flipped through his copy of one and picked a few questions out of each section to ask me. If I messed up he stayed in that section longer. If I answered a handful near perfectly that section was done.

In-ear plugs (foam) work great but only if you insert them correctly. Pinch and roll them between your fingers (not twist, just compress) and insert them while using your opposite side hand to pull upwards on your ear (ie for your right ear use your right hand to insert the plug while using your left hand to pull upwards on the tip of your ear). This opens your ear more and allows for a more effective seal.

For over the ear hearing pro (non-aviation headset) I like the Peltor Sport Tactical 500 (link below). They're electronic so you can still easily ear nearby voices but they filter out loud noises. If the batteries die they still work as they block noise via passive noise reduction. I use them in indoor shooting ranges.

https://www.amazon.com/gp/product/B06W56YRWJ/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1

Thanks! Not a problem. I borrowed my friends GoPro Hero 5, went to best buy to buy this

https://www.amazon.com/GoPro-Grab-Bag-Official-Mount/dp/B01GCKO9IK/ref=asc_df_B01GCKO9IK/?tag=hyprod-20&linkCode=df0&hvadid=312066954908&hvpos=1o1&hvnetw=g&hvrand=8734905018529032568&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9011007&hvtargid=pla-403917725187&psc=1

The cockpit already had mounts from before so I was able to use that, also had a GoPro Head strap.

Using the GoPro app for my phone made it easy to see what the camera was seeing.

I used these https://www.amazon.com/gp/product/B01ENU1DQC/ref=ppx_yo_dt_b_search_asin_image?ie=UTF8&psc=1, but any SDR with the case removed would work.


I put them in this project box (though I'd recomend going a little bigger)

https://www.amazon.com/gp/product/B0195UP35C/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

​

and then fabricated a bracket that fit snugly into that project box and held each SDR vertically, with their components facing inwards. The SDRs are held in the bracket by holes/slots that fit the USB connector and the antennae connectors. Then drilled vent holes in the project case over the center of that bracket. Build an airpath from one end of the project box to the bottom of the bracket, between the two SDRs, on either end.

Idea being that the heat from the SDRs will cause a natural convection airflow, draw in from the end of the case, into the bracket between the SDRs, and then up and out of the case through the top vent holes.

​

Then just use USB cables to go from your rPI to the SDR box.
I also mounted a GPS on top of the project box, but keep it as far away from the SDRs as possible. Basically put the SDRs at one end, and then the other end will hold the extra length of the antennae cables. and you can put the GPS over that end.

If that is clear as mud I can try to sketch it, let me know.

This book is an awesome collection of what you need to know for your checkride. You honestly could probably just use this book and be completely fine. I’ve recommended it to everyone in my club who is nearing their checkride and they all love it.

Private Pilot Checkride Preparation and Study Guide https://www.amazon.com/dp/152028795X/

do you need groundschool?

1. watch these at your convenience, and TAKE NOTES https://www.youtube.com/playlist?list=PL0EbtWieMNGzdtQ6fAfAQMiNvxG8F-gX7
   
   
2. Buy this ($13 ain't bad, but you COULD just download off FAA, though I find the hardcopy easier to use): https://www.amazon.com/gp/product/1619545365/ref=ox_sc_act_title_1?smid=ATVPDKIKX0DER&psc=1
   
   
3. Buy this (yeah yeah I know don't learn the test, learn the materials, but this is still a good resource and you get 5 free practice tests): https://www.amazon.com/Test-Prep-2018-Private-Pilot/dp/B0748MJ4M8/ref=sr_1_fkmr2_2?s=books&ie=UTF8&qid=1505318469&sr=8-2-fkmr2&keywords=ppl+knowledge+test+asa

As mentioned, I would start by reading some FAA publications (assuming it's an FAA certificate you're going for):

PHAK - Pilot's Handbook of Aeronautical Knowledge - http://www.faa.gov/regulations_policies/handbooks_manuals/aviation/pilot_handbook/

Aeronautical Information Manual - http://www.faa.gov/air_traffic/publications/media/AIM_Basic_4-03-14.pdf

You should also read through 14CFR sections 61 and 91:
http://www.ecfr.gov/cgi-bin/retrieveECFR?gp&SID=257acc4699ee7253af775fc7e9492e51&r=PART&n=14y2.0.1.1.2

http://www.ecfr.gov/cgi-bin/retrieveECFR?gp=&SID=257acc4699ee7253af775fc7e9492e51&r=PART&n=14y2.0.1.3.10

All of this information is free, and covers around 95% of what will be on the FAA private pilot written exam.

If you're getting close to test time, I also highly recommend a test prep book (I used: http://www.amazon.com/Private-Pilot-Test-Prep-2014/dp/1560279788 ) as these contain almost all of the questions you could find on the exam, as well as explanations for the correct and incorrect answers.

Good luck!

TC Seaplane Instructors Guide is good for learning the basics required for the rating.

Notes of a Seaplane Instructor is a great resource. This was my go to resource.

Seaplane Operations is great if you want to get technical.

Source- Taught float ratings in BC for 5 years

I enjoyed reading this https://www.amazon.ca/Notes-Seaplane-Instructor-Instructional-Flying/dp/1560275588/ref=sr_1_1?ie=UTF8&qid=1492097199&sr=8-1&keywords=notes+of+a+seaplane From what I saw on the internets, it was a popular choice, and I can see why.

I'm only part way through the training. It was a good introduction. However, nothing compared to some good lessons with a former bush pilot.

I have the Clarity Alofts and love them. Tried the QT Halos and didn't find them to be as comfortable or stay in place or something. Can't quite remember but I sent them back immediately. Pro tip (no pun intended) for the CA headset is to buy these tips to use instead of the foam tips they come with. These rubber ones last forever and go in and out easily. https://www.amazon.com/gp/product/B0078JXDQ4/

I should first point out that self-study is very subjective. In fact, the most important thing to do is to understand how you study, and how you learn, then apply methods that are most conducive to that. That includes, of course, recognizing if you are a bad self studier. If you are, then enlist an instructor or make a friend who is going through the same thing as you. That being said, here is what I do...

-Start with a base knowledge. In the states, that means reading the FAA Pilot's Handbook of Aeronautical Knowledge. There are pictures and the reading is not that dense. No need to make an outline here, maybe just make a few notes on each chapter.

-After that, I would start getting into more dense reading. Again, in the states, that includes Reading the FAR/AIMs and other books designed for student pilots, I use this one. Look at what you need to know (e.g. Part 61, 91) and then outline the same as you are reading. Put the important parts of the reading in your own words. Bold/highlight major rule points. Make check lists or use mnemoics (the flying world has plenty of them already made up for you, e.g. A.R.R.O.W.). Make sure that by putting something into your own words, you don't accidentally change the substance of what you are outlining (e.g. the book says a pilot MUST do x, y, z and you write a pilot may do x and y).

-Find a way to test yourself. I use Sporty's test question bank called Study Buddy. After you read a Section or subject matter, test yourself. Regularly test yourself with relevant questions all the way up to the exam.

-I then follow up with my instructor or with the guys and girls on /r/flying. For instance, the other day I was reading about carb heat, I just didn't feel like I was UNDERSTANDING it, so /r/flying helped out big by answering my question.

In closing, this is MY take on studying. I don't know if it will work on the written yet because I have not taken it. If someone else who has taken it and passed gives you advice, go with them. I also don't know if every or any part of it will work for you. I just developed this system: 1) read an overview, 2) critically read and outline, 3) periodically test yourself, 4) hold conversations with people to make sure you understand or to fill in gaps that the books aren't getting at. It got me through undergraduate and graduate school and the damn Bar Exam so i know it works ... FOR ME. I hope it helps.

P.S. As far as a syllabus, look in your regulations or previous test outlines to see what you need to know. Use that as an outline.

Awesome! I'll probably get those to suppliment. Just to confirm, you're referring to these, right?
https://www.amazon.com/Pilots-Handbook-Aeronautical-Knowledge-FAA-H-8083-25B/dp/1619544733/ref=sr_1_1?ie=UTF8&qid=1499377298&sr=8-1&keywords=Pilots+Handbook+of+Aeronautical+Knowledge

and

https://www.amazon.com/Student-Pilots-Flight-Manual-Certificate/dp/156027719X/ref=sr_1_1?ie=UTF8&qid=1499377340&sr=8-1&keywords=The+Student+Pilots+Flight+Manual

Thanks!

Rod Machado's Instrument Pilot's Handbook is probably very good based on the quality of his Private Pilot Handbook. I own both and love the Private Pilot Handbook -- very clear and thorough explanation backed up with clear illustrations. I have not gotten around to reading the Instrument Pilot Handbook yet but I am looking forward to it!

So... its getting hot out. Thinking of ways to stay cool - anyone have any experience using/flying with these vests? https://www.amazon.com/FlexiFreeze-Ice-Vest/dp/B01MQ3NW7U?th=1

Getting three of these is still cheaper than buying a ready made ice chest cooler, and easier than building and restocking a homemade one...

Get the ASA Oral exam guide for Private Pilot. They will over prepare you if you know it cover to cover. Congrats on passing the written, it's a good feeling getting those over with.

http://www.amazon.com/Private-Oral-Exam-Guide-comprehensive/dp/1560279494/ref=sr_1_1?ie=UTF8&qid=1458476616&sr=8-1&keywords=asa+oral+exam+guide+private

I get I just stuck it in too far ( ͡° ͜ʖ ͡°)

No but seriously, I got these new eartips that I find much more comfortable. Highly recommend. (Nota bene: I have small ear canals)

Suunto Core

I absolutely love this thing. It has an incredibly accurate altimeter, 2 times (one for local, one for zulu - both available in 24 hr format), sunset/sunrise, and the altimeter functions as a depth gage when you go underwater, so its perfect for shallow diving. Its also really tough, the battery lasts over a year, and I use it for flying, mountain biking, diving, looking cool, etc.

eReader full of books. eInk version. They'll run forever on a battery charge, easier on the eyes / don't f with sleep as much as an LCD screen, most of them nowadays are waterproof (hot tub, bathtub)...

Aleve.

Deodorant (separate from the one in the dopp kit; e.g., I keep a travel stick in my flight bag).

A dopp kit with all the usual stuff (razor, shaving soap or cream, toothbrush, toothpaste, mouthwash, decent shampoo / conditioner, etc).

Decent set of headphones. (Lately, that's been the QC35s, but I've also been known to carry the Backbeat Go 2 set with Comply foam tips - they don't really work for me but they work for a lot of people. (The last in-ear phones I found that worked reliably for me were Shures, I think SE210s?)

You mentioned a charger, but I'd go one better with the Anker PowerCore Fusion, Portable Charger. It's both a charger and a portable battery pack.

Do you wear an Apple Watch or something else that needs recharging? Charger for that.

FlexiFreeze Ice Vest (Zipper Closure) https://www.amazon.com/dp/B01MQ3NW7U/ref=cm_sw_r_cp_api_hWbBzb9CF5SP6

I have not used it, but seems like it might work ok?

Did you know Amazon will donate a portion of every purchase if you shop by going to smile.amazon.com instead? Over $50,000,000 has been raised for charity - all you need to do is change the URL!

Here are your smile-ified links:

https://smile.amazon.com/Rugged-Air-RA200-General-Aviation/dp/B01A6KE0RC/ref=sr_1_1

https://smile.amazon.com/gp/product/B0076N9LM2/ref=oh_aui_detailpage_o03_s00

---

^^i'm ^^a ^^friendly bot

Yes, I have done it, granted not with a stratus but with a stratux. Just make sure you are not going over the amperage limit of the plane but frankly 3.4 amps at 5V is nothing. Get yourself one of these https://www.amazon.com/Anker-Charger-PowerDrive-iPhone-Galaxy/dp/B00VH84L5E/ref=sr_1_1?ie=UTF8&qid=1484182096&sr=8-1&keywords=2.4+amp+dual+car+charger

One last edit the C172S POH says its a 12 10 amp, giving you 120 watts, WAY lower then what that charger will pull so get a good charger and you should be set. Check your POH for specific limitations.

https://www.amazon.com/Visualized-Flight-Maneuvers-Handbook-Handbooks/dp/1560275219 I bought the first edition used. Its good. I was always looking for something specific for a C172 since that is what my school uses. The book has space to fill in numbers specific to your plane. It spells out how to do the maneuvers whereas I feel like the ACS just has what you need to do and to what standards and not how to do them.

I've been taking two sportys practice tests a day, one in the morning, and one at night.

Also using this.

https://www.amazon.com/gp/product/152028795X/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1

If you get that book in printed form you can get it on Kindle for free. That book is pretty damn legit.

I'm a fan of Rod Machado's book. I feel like the FAA resources are a bit dry for a newbie:
https://www.amazon.com/Rod-Machados-Private-Pilot-Handbook/dp/0963122991/

Found this to be a pretty good resource as well for $9. The book is small, but packed with quick references.

Private Pilot Checkride Prep

Don't feel down, just train and do it again!

There are a couple of resources that I found especially useful for the PPL oral: Rod Machado's book and the ASA Oral. You should have these cheat sheets memorized.

Though I did my PPL Part 61, I went to a Part 141 school that did three stage checks you had to pass (with an oral for each) so you could track your progress. If you can, I would have a CFI who routinely does stage checks for a Part 141 school do a mock oral with you before you go in front of the DPE again.

The weather section of this book pretty much covered it. Aside from that, I don't remember any serious "gotch-ya's".

I read this book before starting, Notes of a seaplane instructor, to brush up on some topics I may have forgot or didn't quite understand. It's an easy read.

> line is a bear for me. I can't sit in one place for awhile, so even at home, reading on a laptop that gets hot is killer. I'll spend the money for the print.

ASA publishes the print versions, here's the lazy-link: PHAK, AFH, and the FAR/AIM but it looks like the Gleim kit already has that one.

Buy this and read it cover to cover.

This:
https://www.amazon.com/dp/1619544733/ref=cm_sw_r_other_apa_i_gWyACbBY0R1E4

They are cheap, but if you get the gel ear seals they are actually very comfortable. RuggedAir RA200s. Have 3 sets for passengers, have gone on some 5 hour XC's and no complaints. I also used this until I got my PPL and got some Bose X's.


https://www.amazon.com/Rugged-Air-RA200-General-Aviation/dp/B01A6KE0RC/ref=sr_1_1?ie=UTF8&qid=1502381853&sr=8-1&keywords=ra200

https://www.amazon.com/gp/product/B0076N9LM2/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1