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.
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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.
Checking in With Sonex’s Mark Schaible — Update on the High Wing and Will it Be a MOSAIC Design?
Light Sport enthusiasts who appreciate light, simple, inexpensive airplanes have been watching Sonex Aircraft develop the High Wing model for a couple of years now. It’ll first come out as an Experimental/Amateur-Built version but the company is very much open to considering an E-LSA and even, with some outside help, an S-LSA version. (Or whatever we’re going to call that once MOSAIC is real.)
Company owner Mark Schaible joins us to talk about the airplane’s gestation and expectations for performance and when it might fly. Hint: You’ll be able to see a cabin mockup at AirVenture this year at the least. In general, Sonex is hoping for performance similar to the low-wing Sonex designs and will be building the first example as a taildragger with a 130-hp ULPower engine. Schaible also discusses changes to the design now that MOSAIC is closer to reality. Expanded Sport Pilot rules could allow Sonex to give the High Wing a gross weight above the current 1320-pound maximum for LSA.
Crystal Balling — What Will Rotax Do Next?
Untethered prognostication is what you do waiting for the rain showers to blow through and the sun to reemerge on your long cross country. Me? I sorta do it for a living. (Such as that is.) And I get to do it often enough in front of people who work deep in the industry to see if I’ve landed close to the truth. Like playing Battleship with engineers and PR people.
My latest prognostication jag centers on what’s next for Rotax. And it’s driven by a feeling that there’s no time to waste moving up the horsepower ladder. Here’s my argument.
First, the traditional engine manufacturers have still not recovered from what they say are pandemic-related supply-chain issues, which causes huge delays in deliveries and helps drive prices quite high. In the Experimental realm, where I also live, new engines have become exceptionally more expensive, leading some builders to reassess their budgets and stop their projects where they stand.
New Buyer for Icon Reported — What Happens Now?
Icon is a global enterprise. While its headquarters remains in Vacaville, California, fabrication is done in Mexico, and ownership is in China. For some years, this American start-up has benefitted from Chinese investment.
How much investment has this California company attracted? Numbers I’ve been quoted vary enormously but all estimates run into many millions of dollars. If these guesses are even close to accurate, Icon has generated more investment funding than nearly any LSA producer. Only one outstrips them. That was a reported $200 million sale of Pipistrel to Textron, owner of Cessna and other aviation brands. I hope the aerospace conglomerate got all they hoped for because that is a super-premium valuation for any LSA company, even one as tech-savvy as Pipistrel.
Icon has performed reasonably well in recent years (“200 Delivered” report) but prior investments in the company require sales volumes that are difficult to reach, especially with a $400,000 price tag.
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