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Stratos 716X

ByHank Gibson

Cirrus Vision Jet, meet your competition.

In July, Stratos Aircraft completed the first test flight of the single engine Stratos 716X personal jet. Stratos, based in Redmond, OR, is taking a page out of Epic Aircraft’s book in how the company is planning on bringing the Stratos 716X to market.

Epic Aircraft first released the Epic LT composite single engine turboprop in the early 2000s as an experimental. The first kit was completed and flying in 2005. Epic’s goal was to bring the airplane to market as a certified aircraft, a feat that took them almost 20 years to do, achieving full certification earlier this year.

Stratos Aircraft is hoping to learn a lot from their Bend, OR neighbors. The 716X is going to start off as a limited release experimental kit, while the company is working on achieving certification for the airplane. Once the plane is certified, it will be dubbed the Stratos 716. The 716X experimental kits will be assembled through a factory builder assist program (no garage built single engine jets here!). The kit will cost $2.5 million assembled, while the expected cost of the certified Stratos 716 will be $3.5 million.

Now, let’s talk about the airplane. 400 KTAS. One engine.

That’s right, you did hear correctly. The Stratos 716X is expected to cruise at 400 KTAS on only one engine. Compared to the Cirrus Vision Jet, that’s 100 knots faster. Think, “I’ll be relaxing at the hotel pool with a drink in hand when you are landing” type speeds. The fuel burn of the Pratt & Whitney JT15D-5 engine (3,000 lbs of thrust) is about 25 GPH more than the Vision Jet (the Stratos 716X will burn about 98 GPH of Jet A while the Vision Jet averages about 75 GPH of Jet A).

Comparing the two engines, the above numbers start to make sense. The Williams FJ33 engine on the Vision Jet only puts out 1,850 lbs of thrust, significantly less than the 3,000 lbs of thrust that the Stratos 716X Pratt & Whitney JT15D-5 puts out.

What does that mean to the pilot? In the Stratos 716X, it means less takeoff roll, better climb rate, faster cruise (as evidence by the 400 KTAS expected cruise speed), and a better payload. More power = more weight carrying capacity. And, the 716X is expected to have a service ceiling of 41,000 feet. I probably wouldn’t want to go that high single pilot with one engine, but I’d be very happy with that speed in the mid-30s.

The cabin, based on the pictures I’ve seen, looks very comfortable. The Stratos 716X seats 6 and can be configured in several different ways. Baggage is no problem as Stratos Aircraft stretched the fuselage from their original 714 Proof of Concept aircraft, adding a very roomy baggage compartment above the engine compartment. The passenger compartment is as big as a Phenom 100, providing more leg and head room than the Vision Jet. The front seats have plenty of legroom too, as Stratos has opted for a side stick instead of a yoke.

The avionics for the Stratos 716X are expected to be the Garmin G3X Touch for the panel which will be driven by a Garmin GTN 750 GPS. Autopilot will be integrated within the G3X. I would imagine that once the plane is certified, the panel will be switched to a Garmin G1000 NXi and a GFC 700 will be installed.

The genius of the design of the Stratos 716X is the aerodynamics of the engine placement. Instead of hanging the engine out in the slip stream and going with a drag inducing V-Tail like Cirrus did, Stratos took some notes from the myriad of single engine military fighter jets out there, placing the engine inside the fuselage. The fuselage is then built around the engine with two air scoops for intake directly in front of the wings. With two intakes instead of one, that leads to more air flow, which again, means more power. The Vision Jet has only one.

I’m going to keep tabs on the Stratos 716X (as I kept tabs on the Epic E1000). I’m hoping Stratos gets several flying soon (the company expects to do 3 kits a year till the airplane gets certified) and certification comes quickly after.

I got to stick my head in the mockup of the Stratos 716X when I went to Osh Kosh in 2018. I was very impressed and was excited to see the airplane was finally airborne this summer.

For more information about the Stratos 716X, check out the Stratos website.

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  • 2022 MMOPA Convention

    ByHank Gibson

    MMOPA announced the location for the 2022 MMOPA Convention. The 2022 Convention will be in Tucson, Arizona and will take place September 29th-October 2nd, 2022. The JW Marriott Starr Pass will be the host resort.

    Thursday, September 29th will kick off the convention with a safety event for pilots and companions, lunch with exhibitors, and the return of the charity golf tournament.

    Friday, September 30th and Saturday, October 1st will be when all the classes and seminars that make the MMOPA convention great are held. The Friday dinner will be at an aviation themed spot in Tucson while the annual auction and black tie affair will be Saturday night.

    Stay tuned to the event details page on the MMOPA website to see when registration is opened.

  • Piper PA46 De-Ice Boots Care

    ByHank Gibson

    It’s winter time, which means it’s time to use those Piper PA46 de-ice boots a little more often. Most of us know the winter flying rules, don’t stay in ice, get rid of frost, etc. However, most of us aren’t as familiar with how to maintain those Piper PA46 de-ice boots. The do need some TLC every couple of months to keep them in tip top shape.

    Below is the recommendation from Goodrich (the maker of the boots) on what to use to clean and polish the boots and how often to do it.

    Steps 1-3 below are your twice a year items to make your Piper PA46 de-ice boots last through the lifetime of the aircraft.

    Step 1-ShineMaster Prep

    ShineMaster Prep strips all the dirt, grime, grease, oil, silicone products and old ShineMaster on the Piper PA46 de-ice boots to prep them for Step 2.

    ShineMaster Prep can be found on Goodrich’s website.

    Step 2-AgeMaster #1

    AgeMaster is your second step the in the Piper PA46 de-ice boot preservation and protectant process. AgeMaster is a rubber preservative that protects against weathering, ozone, and ultraviolet rays.

    Make the first application when your de-ice boots are 6 months old, then re-apply every 150 hours (or twice a year) after that.

    AgeMaster #1 can be purchased on Goodrich’s website.

    Step 3-ShineMaster

    Step 3 in the Piper PA46 de-ice boot care is ShineMaster. As the name implies, ShineMaster shine’s the boots up after getting rid of all the old gunk & grime with ShineMaster Prep and after AgeMaster is applied. 2-3 coats should be sufficient.

    ShineMaster can be purchased on Goodrich’s website.

    During icing season, Goodrich recommends ICEX II. ICEX II is an ice inhibitor that should be applied every 50 hours during ice season. This will help prevent ice from sticking to the Piper PA46 de-ice boots. ICEX II can be found here.

    Finally, for general cleaning of the boots after each flight, utilize Goodrich Aerospace Cleaner to debug, then follow up with Goodrich Aerospace Protectant. Goodrich claims their Protectant will resist dust, soiling, and staining. There may be less bugs to clean each time!

    With just a few hours a couple times a year spent working on the Piper PA46 de-ice boots, owners will never have to worry about the hefty price tag of boot replacement!

  • An Innovative ADS-B Solution from uAvionix

    ByHank Gibson

    The closer we get to 2020, the more innovative companies are getting with ADS-B out solutions.  There are a myriad of transponders out there that have been released in to meet the ADS-B out requirement and to offer ADS-B in options.  L3 has the Lynx transponder line (and hardware to upgrade an already installed GTX 327 or GTX 330), Garmin has the GTX 345 and offers upgrades to the GTX 330, Appareo has it’s Stratus ESGi ADS-B out transponder, and Avidyne offers it’s AXP340 transponder, among others.

    Most of the ADS-B solutions require some kind of panel work, whether it’s pulling out the Garmin GTX 330 to send off, or making panel modifications to fit the L3 Lynx in.  Very few are actual slide in replacements, so there is some labor involved in swapping transponders.

    Want a simpler and more innovative solution?  uAvionix, a Montana based company that makes the recently released Scout portable ADS-B In solution, has a product for you.  Meet the SkyBeacon.

    What is it?  The uAvionix SkyBeacon is simply a navigation light replacement that bolts on your wing with a fin that hangs down.  All the ADS-B out transmitting equipment is placed behind the nav light on the device.  It has an integrated WAAS GPS unit, can work with any Mode C or Mode S transponder wirelessly, and it mounts directly in to where the original nav light was, same screws and everything.  No additional hardware needed.  uAvionix claims installation should take 10 minutes.

    Configuration is super easy too, as it is all done on a smart phone on the uAvionix app.

    Right now, the uAvionix SkyBeacon is only approved for experimental aircraft, but, according to their website, uAvionix expects FAA certification in early spring.  With a price tag of only $1,500 and a strobe light to be added as well, this is your simplest and easiest ADS-B compliance solution.

  • Introducing…The Aviator’s Academy

    ByHank Gibson

    Imagine this …

    You have plans to fly to an airport 218 miles north for a business meeting. Your window is tight; you have an early morning meeting at your office you can’t miss prior to leaving for the airport. The colleagues you are flying to meet must catch another flight within two hours of your target arrival time. 

    You’re comfortable flying in the current weather conditions, but a small southward-moving storm north of your destination might threaten your approach. Additionally, given the time of day, you can expect ATC delays due to vectors and know you’ll have to adjust on the fly.

    Are you confident you can make the meeting in time?

    If the answer isn’t immediately clear, you’re not alone. Good aeronautical decision making is of utmost importance in the air. External pressures, unexpected challenges, and your level of instrument proficiency are among the many factors to consider when considering an IFR flight. 

    While we can’t remove the external pressures or control the weather, we CAN help with instrument proficiency!

    Introducing … The Aviator’s Academy – advanced online pilot training. 

    During my time training hundreds of capable and competent pilots at Texas Top Aviation, my most common observation with seasoned and rookie pilots alike is that the pilot is often aware of knowledge gaps with the airplane’s avionics after initial flight training or after upgrading to a more advanced airplane, but aren’t sure where to get answers.  Simply put – expert glass panel flight training is hard to find.

    They know enough to have earned their license, but still feel uneasy anticipating unexpected challenges. This leaves them feeling at best, uncomfortable, or worse, on edge and unsafe. When you’re not as proficient as you could be, an easy flight can become stressful quickly in unexpected scenarios, and things spiral from there. It doesn’t have to be this way.

    That’s why The Aviator’s Academy offers online courses with real-life scenarios using glass panel avionics. You’ll gain more confidence in the air and be equipped with better aeronautical decision-making skills after learning from the best in the business.

    We understand the pressures you face in the air. We get it because we have been providing expert, personalized, owner/pilot instruction since 2014 at Texas Top Aviation. With over 8000 hours of instruction given in Technically Advanced Aircraft and over 13,000 hours in total flight time, The Aviator’s Academy instructors are qualified to fly and instruct most single-engine aircraft to a level that far exceeds what a flight school can provide. Nowhere else can you get expert glass panel online instruction for Technically Advanced Aircraft.

    If you’re in need of an instrument proficiency check and fly a technically advanced aircraft with glass panel instruments, this is the place to get your ground school training. Conveniently online. Expertly taught. 

    Mastering your glass panel avionics isn’t impossible. You just need a guide. Enroll in the course you need to take your skill to the next level. You’ll receive expert, specialized online training. Then you’ll fly with confidence.

    LAUNCHING AT OSHKOSH! Visit www.aviatorsacademy.com and leave us your email to be notified when our first course drops. Come visit us at booth 3004 at Osh Kosh, July 25th-July 31st, 2022.

  • Make The Upgrade to Pressurization

    ByHank Gibson

    Are oxygen cannulas rubbing your nostrils raw?

    Is turbulence giving you back problems?

    Would you like to be above the bumps, breathing without tubes stuck up your nose or a mask on?  Would you like a quiet ride?

    Sounds like you need pressurization.  Need more convincing?

    What’s that you say?  You don’t have a multi-engine rating?  You don’t want to spend the money on a turbo prop?

    Have no fear, there are options galore for you to choose from in the single engine piston marketplace, both certified aircraft and experimental.

    A word of caution, though; once you go pressurized, you don’t go back….

    Here is my review of the certified, pressurized single engine piston options.

    Piper PA46 Malibu/Mirage/M350

    In 1983, Piper shocked the world with an amazing airplane.  The pressurized, Continental TSIO-520 (310 HP) powered PA46 Malibu hit the market in the fall of that year taking the piston world by storm.  A six seat, cabin class, pressurized single engine piston that easily cruised at 190-200 knots while only burning 16-17 GPH. It was awesome.  It even had an air stair door that felt like getting on a private jet.

    I love the original Continental powered Malibu, specifically the ’86-’88 models.  Piper initially had hydraulic flaps, which were clunky and had several issues (most notably, the hydraulic system would randomly kick offline while the flaps were in motion at very in-opportune moments).  Piper switched to the electric flaps in ’86, making the ’86-’88 year models very desirable.

    Unfortunately for Piper, the Continental TSIO-520 was not the engine manufacturer’s best product.  There were several Malibu crankshaft problems and engine failures, so much so that Piper decided to go with the Lycoming TIO-540 engine in 1989, creating the Malibu Mirage (all the current Malibu’s operating the -520 engine have been overhauled many times over, so there are no safety concerns with the -520 engine).  The Lycoming powered Mirage (350 HP), cruises a little bit faster than the Continental powered Malibu, but burns about 5 more GPH.  Piper still makes the Mirage, now dubbed the M350, complete with the Garmin G1000 NXi panel.

    The 4 seat, cabin class back seat is very roomy (unlike a Bonanza or Saratoga).  There is plenty of rooms for bags, both behind the back seat and in the handy nose compartment, which is wide enough to fit golf clubs, minus the driver.  The 1600 pound useful load (880 pound payload with full fuel), allows for a lot of people and gear to be loaded on board.  The airplane is a little stingy on CG, though.  You do not want to have a CG that is out of the rear limits.

    The airplane is fun to fly.  It has a heavy elevator, similar to a Bonanza, which requires a lot of trim on landing.  It’s very long wings cause it to float a bit on landing if the pilot comes in too fast.  It’s very docile in stalls and extremely comfortable for cross country flying.  The air conditioning system works very well, though it is still hot on the front seats when sitting on the ramp on a Texas July afternoon.

    Many of the airplanes have upgraded to glass panels.  Most are still equipped with the King KFC 150 autopilot, some with a Yaw Damper, some not.  The KFC 150 is a good autopilot, but when Garmin certifies their GFC 600 for the PA46, that will be a popular retrofit.

    If I had my pick, I would buy an ’86-’88 Malibu with an upgraded Continental TSIO-550 engine.  Climbs a bit better and does a bit better in cruise than the original -520 engine.  See why here.

    I would rate the PA46 line as the best pressurized single engine piston option out there.

    Cessna P210 Centurion

    The P210 was introduced by Cessna in 1978.  It also came with the Continental TSIO-520 engine that the Malibu was certified with.  Climbing at about 700-800 fpm (equal to the Malibu), the P210 cruises at around 190 KTAS as well, burning around 17-18 GPH.  Like the Malibu, the P210 had a Continental TSIO-520 power plant, but, unlike the Malibu, the P210 makes the pilot work to keep the CHTs cool.  With smaller cowl openings and a tighter cowl, cooling isn’t as good as the Malibu.

    Even though the P210 has six seats, the forward facing, Cessna style 3 rows aren’t quite as comfortable as the Malibu.  The single door on the pilot’s side makes loading and unloading a bit of a chore (especially compared to the air stair door in the Malibu).  The third row of seats isn’t extremely useful, as the ceiling is lower and the proximity of the second row of seats decreases the amount of leg room, making it uncomfortable for a full size adult.  Most operators remove the pilot’s side second row seat to add an aisle to get to the back row for people and bags.  It also has a smaller cabin then the Malibu.

    There is less baggage in the P210, with the singular baggage compartment accessed through a baggage door behind the cabin.  The Air conditioning system is also not as good as the Malibu.

    It’s hard to get the P210 out of CG and overloaded.  A useful load of 1500 pounds (with 90 gallons of fuel, it drops to only 960 pounds) allows the airplane to be loaded to the gills without being overweight.

    There are some engine upgrades out there for the P210 (the Silver Eagle conversion puts a Rolls Royce turboprop on it).  The best piston conversion is the Vitatoe Conversion that swaps the engine out for a Continental Turbo-Normalized IO-550, which is a much better engine than the -520.  You still have to monitor the CHTs, but cooling is less of an issue.  These are much higher priced on the market, though.

    Because of the size of the cabin and the true reputation the P210 has of being a maintenance hog, I would rate it below the PA46 line.

    Extra EA-400

    There are 3 pressurized, single engine piston airplanes out there today: the Piper PA46, the Cessna P210, and the Extra EA-400.  Extra is the famous German aerobatic aircraft manufacturer that created the Extra 300 and 330.  In the early 2000s, Extra tried it’s hand at the pressurized single market with the EA-400 (Extra also tried to get into the single engine turbo-prop market with the EA-500, but the project fizzled before much progress was made).  Sadly, only 27 EA-400s were built before the company ran into financial trouble.

    The concept sounds cool.  A fully composite, pressurized, liquid cooled, cabin class piston.  The engine was the Continental TSIOL-550, liquid cooled power plant.  Liquid cooling means no concern about hot CHTs while you are climbing.  The problem with the engine is that there are so few liquid cooled Continental engines out there, finding a mechanic familiar with one could be an issue.

    I have never flown an Extra 400, but there are several floating around out there.  Most have steam gauges and the STEC-55x autopilot.  The price on the only one on Controller right now is comparable to the P210N but above the Continental powered Malibu.

    If you are in the market, an Extra 400 might be fun to test fly and who knows, you might fall in love with it!

    Experimental Options

    There are a handful of experimental pressurized singles out there.  I have not flown any of them, so I can’t be a good resource on recommending them.  Here is the list, however.

    Lancair Evolution Piston

    Lancair IV-P

    Lancair ES-P

    Lancair LX7

    As far as availability on the market goes, there are 8 Malibus on Controller (1 1986 model) ranging from $315,000 and down, 24 Mirages ranging from $705,000 (equipped with the Garmin G1000) and down, 25 P210s ranging from $405,000 and down, and 2 Extra EA 400s, priced at $369,000 and down.  Check out the available Experimental Lancair options here.

    Have you decided to upgrade, but don’t know what to buy or how to buy it?  Check out Texas Top Aviation’s Acquisition Services.  We’ll get you the best airplane for you, your mission, and your budget.  Contact Us today to find out more information.

  • Jet A Fueling Mismanagement

    ByHank Gibson

    I’m sure at this point, most pilots in Texas have heard about the Cessna 421 that went down two weeks ago in Lufkin.  The Golden Eagle suffered a dual engine failure (the pilot lost the first at 2300 feet, then the second at 1700 feet) in IMC on climb out.  He broke out at 1,000 AGL miraculously lined up with US 59, south of the Lufkin airport.  The pilot had to dodge a car as he was attempting his landing, stalled the airplane, sheared off the landing gear, then slid into the median.  No one died, but lots of bumps and bruises.  All were airlifted to Houston.

    Jet A Lufkin Plane Crash

    The cause was a lineman at LFK put Jet A in the 421, which is a piston airplane and takes 100LL Avgas.  The story that I saw said the pilot and two passengers were returning to Houston from Kansas City and diverted to LFK due to weather.  They landed in driving rain and spent the night.  I have not seen any reports saying whether the pilot sumped the tanks or not the following morning.

    There were several factors that led to this accident.  If you take one factor out, the accident probably wouldn’t have happened.  Let’s take a look at the sequence of events.

    The 421 arrived in a driving rain storm, so the pilot and passengers probably disembarked quickly to get out of the weather.  Factor number 1 presents itself here.  We don’t know whether or not the pilot told the lineman to put Avgas in it or not (he may have just said fill it up), so we’ll leave that aside.

    Understandably, the pilot dashed inside to get out of the rain, but they neglected to monitor the fueling.  Whether or not the fueling took place that night or the next morning, we can’t say.  I have started to greatly encourage my customers to monitor the fueling of their airplanes, especially when it’s a fuselage that can either have Avgas piston engines or Jet A turboprops, as is the case with the Cessna 421.

    Factor number 2, we already know about.  The lineman messed up and put the wrong fuel in.  If their was uncertainty about what type of fuel, he would have been prudent to await the return of the pilot to ask, even if that meant delaying the pilot’s departure.

    Factor number 3 is the matter of sumping the fuel.  We don’t know if the pilot sumped the fuel or not. The tricky thing about sumping is Jet A doesn’t settle out of Avgas like water does unless it sits for a long, long time.  The two ways to determine if you have Jet A in your Avgas airplane are to smell it, as Jet A has a very strong diesel smell, or do the paper towel test.  The paper towel test consists of dumping a fuel sample onto a paper towel, then let the Avgas evaporate.  If you are left with a nasty, oily residue, you’ve got Jet A in your tanks (not to mention it will smell like diesel).

    To prevent misfueling of your airplane, take the following steps:

    • Be specific in telling the lineman what type of fuel you want, not just “fill ‘er up”
    • Monitor the fueling and watch which truck pulls up to your airplane
      • This is especially important with fuselages that can have either Pistons or Turbo-Prop engines, like the PA-46 line or the Twin Cessna line
    • Always sump your fuel, definitely smell it, and if there are any doubts, try a paper towel test

4 Comments

  1. I for one would prefer a yoke to a side stick any day, but I must be in the minority…
    I would also recommend staying with the g3x configuration rather than locking into the airframe tied nxi configuration. This hasn’t, and isn’t working well for legacy g1000 owners at all.
    However, it is a good looking plane, and the thought of 400knots with a jet for less than a meridian is very intriguing!
    Best of luck!

    Reply

  2. Looks like a cool plane, I’m not a big fan of the vision jet. But I’d prefer a yoke, when the turbulence gets nasty I can’t see a non fbw side stick giving you the ability to have as much control as a yoke, or the Embraer style horns.

    Reply

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