The ongoing issue of finding a replacement for leaded avgas took an ugly turn recently after Cirrus advised owners that use of anything other than an “approved” fuel would likely invalidate the engine warranty. “Per Continental and Lycoming, only approved fuels may be used for an engine to be covered by warranty. As the GAMI G100UL fuel is a non-approved fuel per Continental and Lycoming, engines known to have run this fuel may not be covered by the OEM engine warranty. For specific details, please refer to the respective Continental and Lycoming engine warranty documents,” Cirrus said in a statement. “While some aspects of the initial Cirrus testing of the GAMI G100UL fuel are encouraging, other areas, including materials compatibility, remain inconclusive.”
At issue is that the GAMI fuel has not been submitted to the ASTM for “approval” but has received FAA approval in the form of a Supplemental Type Certificate that applies to virtually every spark-ignition aviation engine made.
Building the Affordaplane, Part 3
In the previous installment, I described construction details for the fuselage section of the Affordaplane ultralight project. Now let’s look at construction of the empennage and wing assemblies. Remember, this is a plans-only type of build using off-the-shelf materials and tools intended for a novice builder. Keep this objective in mind when reviewing the construction and design details. A complete free video series on YouTube shows each step of this construction.
The components of the empennage (rudder, elevator, vertical and horizontal stabilizers) are all formed from 1-inch 6061-T6 aluminum tubing. These tubes must be bent into their respective shapes, matching template patterns drawn on your workbench. (Use some craft paper for this!) What is the easiest way to form these simple bends? I found that using an electrician’s conduit bender did the job nicely. With a little practice, each tube was formed to the proper shape and then fitted with a gusset to join its ends.
Inside the Transatlantic Crossing of the Risen
We recently reported that the newest version of the sleek, retractable-gear Risen had made a successful transatlantic crossing. From what we could piece together from outside accounts and posts on social media, it went well. But here’s a more first-person look at the crossing, from the perspective of the right seat.
Andrea Venturini accompanied designer Alberto Porto on the epic journey across the pond. Here’s his account.
It all started last December, with a phone call I received from Alberto Porto. At the time, I was in Australia doing a report at the Gliding World Championship for theItalianTeam. Onthephone Alberto, designer and builder of the fastest ultralight in the world (430 kph/232 knots), with the simplicity that always distinguishes him, says: ”Andrea, keep yourself free for next June, I’ll detail everything when you return to Italy.”
You can imagine my curiosity in the meantime. A few weeks later, the mystery was revealed: the Risen Superveloce with the brand new Rotax 916 iS must be brought to Oshkosh, to AirVenture, the largest and the most important aviation fair ‘of the Universe.’ I knew well what Oshkosh meant.
Advanced Degree in Rotax-erie
Editor’s Note: This story originally appeared in KITPLANES magazine but since so much of the LSA world depends on Rotax engines, we thought this was worth a read here.
Thirteen years into my two-year SeaRey build, OspRey finally had its engine mounted. But when I signed on the dotted line for my new Rotax 914, and with little more knowledge than how to change the oil in my car, I was nervous about my abilities to maintain this expensive engine. Because of this, back in 2014, I attended a weeklong service and maintenance class at Canadian Rotax distributor Rotech Motor, Ltd. Thanks to an excellent hands-on instructor, who acted like he had all the time in the world and a bagful of instructor tricks to teach us, by the second afternoon I had dropped my skepticism and distrust of the price/power ratio of the Rotax engine and was (almost) ready to go out and get a Rotax tattoo.
Buying Used: Flight Design CTs
If you’ve ever shopped for a used sport plane you’ve probably noticed there are almost always a number of Flight Design CT series LSAs up for sale. This shouldn’t be surprising since Flight Design was an early player in our segment of aviation, and in the past two-plus decades the company has sold more than 400 CTs in the U.S. alone.
The planes have proven popular, in part, due to their speed (for an LSA), having a cabin wider than a Cessna 172 and their generous payloads. This article is an introduction to the various CT models, their flight characteristics, and advice for a pre-buy inspection and ownership.
Development
The first CT was produced in Germany by a company that began with hang gliders and paragliders in the 1980s and ultralights in the early 1990s. Now part of LIFT Air Gmbh, Flight Design has faced financial woes over the years, having gone into receivership, and then challenges caused by the war in Ukraine where the aircraft were being built.
MOSAIC – A Different Perspective
A lot has been written about the contents of the MOSAIC NPRM and many people and organizations have been able to comment on it to the FAA. Much of the commentary has been around the extension, or in some cases, curtailing of existing privileges for Sport Pilots, aircraft that can fit into the Light Sport definition and Light Sport Repairman certifications. I don’t plan to re-hash any of that here. This article will focus on what some of these changes could mean, in practical terms, to the market for Light Sport Aircraft and its customers. As you will see, it has the potential to be highly disruptive which not everyone will be happy about but will do so in a way that also opens up opportunities to a wider audience.
Before delving any deeper, let’s dispel the myth held by some in general aviation that Light Sport has been a “failure”.
“Icon in Flat Spin,” UK’s Flyer Reported — Here’s the Latest
Icon Aircraft, creator of the A5 LSA seaplane, is in the spotlight again as bankruptcy proceedings finally come to a close.
Short story: Icon will continue making aircraft, after the bankruptcy heard from a new buyer — not the buyer mentioned before in this recent article. The court sought a change in ownership and an effort to grapple with a large amount of debt.
From beginning (in April 2024) to an end in mid-June, this proceeding moved very swiftly. Here’s the final settlement.
“Icon In a Flat Spin
as Bankruptcy Looms”
Earlier in the day on June 18th, 2024…
Britain’s Flyer magazine reported online that Icon found a buyer but not the one mentioned in the prior link.
“Buy an aircraft manufacturer with a certified product and also selling in the Light-Sport Aircraft class for, what? …£100 million? Try again and aim low: just over £12m ($15.3 million),” wrote Flyer staff.
Risen Completes Transatlantic Leg
On June 14, a Porto Aviation’s Risen completed the transatlantic leg of its journey from Milan, Italy, to Oshkosh, Wisconsin. The company posted on social media: “We made it!!! I have been reluctant to post anything here before accomplishing this epic flight , being Italian I guess makes me more superstitious.A page in aviation history has been written by Alberto Porto and Andrea Florence (Venturini). 1900 nautical miles, average speed [of] 165 kts, with just over 43 gallons of fuel!!! We left this morning early in rainy Scotland and landed in the afternoon at Goose Bay the same day without refueling.”
The company announced its cross-the-pond plans this May to bring the newly re-engined Risen to the U.S. While many versions of the retractable-gear Risen use the Rotax 912, the company had been fitting the turbocharged 915 iS. But this example has the newer, more powerful Rotax 916 iS.
Grassroots Success Story — Dunnellon’s X35 Attracts New, Younger Aviation Businesses
If I’ve heard one lament repeatedly over a long career, it is that current pilots don’t see enough new pilots coming into aviation. Are you one who worries a little or a lot about that? If not, you are a rare pilot.
Is it any wonder, though? The price of aircraft is way, way up. This applies to used aircraft and new — just like it does with your groceries or gasoline. The cost of maintenance is high and rising. Insurance is very expensive (for airplanes as well as cars or houses). Hangars are unavailable with years-long waiting lists at many airports.
More than ever it can seem, aviation is an activity for those with fairly thick wallets. The squeeze on modest budgets has rarely been this demanding.
Yeah, all that, but this website nonetheless discovers the affordable end of aviation. In that pursuit, I was drawn to an airport with an encouraging twist on the affordability squeeze play.
Hot-Rodded Rotaxes? That’s What Edge Performance Is All About
Editor’s Note: Recent commentary on the future of Rotax engines brought out a few comments that high-spec versions of the 900-series engines already exist, just in the aftermarket. For a deeper dive into the topic, here’s a story that ran in early 2023 in KITPLANES from Eric Stewart, a regular contributor to that magazine. Prices for Edge’s modified engines run from 26,000 Euro for the 108-hp EP912i to 45,000 Euro for the 180-hp EP917Ti.
Edge Performance of Notodden, Norway, has been around for little more than a decade, but their EFI and Rotax upgrades have quickly become popular, setting a high bar with race-quality components. I’ll be putting the EP912sti in the SR-1 race plane—not only does it have exceptional power to weight (important given the 661-pound weight limit for the SR-1’s record category), but racers go best when it’s hot and high—and the EP912STi’s turbo ensures we can still make power in those conditions.
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