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Making the Brazilian ATR-72 Spin
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Note: This story was corrected on August 10th at 10:23 am, thanks to the help of a sharp-eyed reader.
Making an ATR-72 Spin
I wasn’t in Brazil on Friday afternoon, but I saw the post on Twitter or X (or whatever you call it) showing a Brazil ATR-72, Voepass Airlines flight 2283, rotating in a spin as it plunged to the ground near Sao Paulo from its 17,000-foot cruising altitude. All 61 people aboard perished in the ensuing crash and fire. A timeline from FlightRadar 24 indicates that the fall only lasted about a minute, so the aircraft was clearly out of control. Industry research shows Loss of Control in Flight (LOCI) continues to be responsible for more fatalities worldwide than any other kind of aircraft accident.
The big question is why the crew lost control of this airplane. The ADS-B data from FlightRadar 24 does offer a couple of possible clues. The ATR’s speed declined during the descent rather than increased, which means the aircraft’s wing was probably stalled. The ATR’s airfoil had exceeded its critical angle of attack and lacked sufficient lift to remain airborne. Add to this the rotation observed, and the only answer is a spin.
Can a Large Airplane Spin?
The simple answer is yes. If you induce rotation to almost any aircraft while the wing is stalled, it can spin, even an aircraft as large as the ATR-72. By the way, the largest of the ATR models, the 600, weighs nearly 51,000 pounds.
Of course, investigators will ask why the ATR’s wing was stalled. It could have been related to a failed engine or ice on the wings or tailplane. (more…)
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How the FAA Let Remote Tower Technology Slip Right Through Its Fingers
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In June 2023, the FAA published a 167-page document outlining the agency’s desire to replace dozens of 40-year-old airport control towers with new environmentally friendly brick-and-mortar structures. These towers are, of course, where hundreds of air traffic controllers ply their trade … ensuring the aircraft within their local airspace are safely separated from each other during landing and takeoff.
The FAA’s report was part of President Biden’s Infrastructure Investment and Jobs Act enacted on November 15, 2021. That bill set aside a whopping $25 billion spread across five years to cover the cost of replacing those aging towers. The agency said it considered a number of alternatives about how to spend that $5 billion each year, rather than on brick and mortar buildings.
One alternative addressed only briefly before rejecting it was a relatively new concept called a Remote Tower, originally created by Saab in Europe in partnership with the Virginia-based VSATSLab Inc. The European technology giant has been successfully running Remote Towers in place of the traditional buildings in Europe for almost 10 years. One of Saab’s more well-known Remote Tower sites is at London City Airport. London also plans to create a virtual backup ATC facility at London Heathrow, the busiest airport in Europe.
A remote tower and its associated technology replace the traditional 60-70 foot glass domed control tower building you might see at your local airport, but it doesn’t eliminate any human air traffic controllers or their roles in keeping aircraft separated.
Max Trescott photo Inside a Remote Tower Operation
In place of a normal control tower building, the airport erects a small steel tower or even an 8-inch diameter pole perhaps 20-40 feet high, similar to a radio or cell phone tower. Dozens of high-definition cameras are attached to the new Remote Tower’s structure, each aimed at an arrival or departure path, as well as various ramps around the airport.
Using HD cameras, controllers can zoom in on any given point within the camera’s range, say an aircraft on final approach. The only way to accomplish that in a control tower today is if the controller picks up a pair of binoculars. The HD cameras also offer infrared capabilities to allow for better-than-human visuals, especially during bad weather or at night.
The next step in constructing a remote tower is locating the control room where the video feeds will terminate. Instead of the round glass room perched atop a standard control tower, imagine a semi-circular room located at ground level. Inside that room, the walls are lined with 14, 55-inch high-definition video screens hung next to each other with the wider portion of the screen running top to bottom.
After connecting the video feeds, the compression technology manages to consolidate 360 degrees of viewing area into a 220-degree spread across the video screens. That creates essentially the same view of the entire airport that a controller would normally see out the windows of the tower cab without the need to move their head more than 220 degrees. Another Remote Tower benefit is that each aircraft within visual range can be tagged with that aircraft’s tail number, just as it might if the controller were looking at a radar screen. (more…)
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At the Movies, I Can Only Surrender So Much
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When a single trip to the bargain matinee equals my monthly Netflix subscription, for most movies my frugality partners with patience and we add the title to our queue. On a 1997 date night, my wife and I saw Air Force One, and she didn’t really enjoy dinner afterwards because I was still ranting about its impossibilities.
Since then, she’s gotten pretty good at gauging my interest in seeing movies either about aviation or that employ it in the story line. A fan of Denzel Washington, she had hopes for his new film, Flight. And then the trailer showed a MD-something-or-other flying inverted at low level and its and its blended right wingtip slicing through the statue on top of some dome. She looked at me, didn’t say a word, and then reached for her laptop.
When it comes to movies, I get it. Unrealistic, often impossible action makes the film more exciting, to those who don’t know any better. Perhaps I’m overly anal, I can only surrender only so much of my disbelief. And I wonder what affect such impossible action has on people with a real interest in flight? And how do they compare to old movies that portrayed flying more honestly and realistically?
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The Slow Death of a Great Brand
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One of the first things I learned as a graduate student at Northwestern’s Integrated Marketing Communications (IMC) program 20 years ago and years later as a teacher in that same program was the value of a brand. Managing a brand is so important people earning college degrees focused entirely on how to protect this important asset. A brand like McDonald’s is much more than its golden arches however, as Apple’s is more than its intriguing white fruit logo.
While a brand is really an intangible, its value to any successful company is immense. In the most simple of terms, a brand is really all about a company’s reputation in the marketplace. How reliable are its products? How clever are employees at developing fresh solutions to old problems? Just as important is the faith a corporation’s name conjures in the minds of consumers ready to hand over their money. Would iPod’s have become household words if Apple had turned their back on customers when a unit failed? Not a chance. A brand then is everything a company does that makes consumers return for more … the employees, the products, the service. Screw any of these up and the brand’s in peril.
Case in Point
Hawker Beechcraft’s troubles aren’t new since the 90-year old aircraft builder’s been wallowing in Chapter 11 bankruptcy since May. No surprise that investors Goldman Sachs and Onex wanted out after struggling with HBC’s $2.5 billion debt, but when the Chinese deal with Superior Aviation fell apart a few weeks ago, on the eve of the industry’s biggest show at NBAA in Orlando, Hawker was trapped between a rock and a hard spot. (more…)
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Redbird Sims Changing Training Paradigm
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Given the rapid pace of change in cockpit technology, it’s really sad in a self-destructive way at how slowly change has come to the training paradigm that puts new pilots in those cockpits. With few exceptions, the way an instructor educates a new pilot hasn’t changed in nearly a century. The training duo talks a bit, maybe draws some diagrams, and then climbs into the noisy non-stop classroom that is the training airplane of your choice.
Certainly it was coincidence that sent me related e-mails on the same day. One was from Redbird Flight Simulation. In its first year, Redbird’s Skyport laboratory fledged 20 new private pilots for a flat fee of $9,500. More important, the simulator-based program took 38 hours, two-thirds the time of the national average time invested in the traditional training paradigm.
A contributing factor is GIFT, Guided Independent Flight Training, which introduces students to new maneuvers in the sim and automatically scores their performance. It works in concert with Parrot, Redbird’s communication training software, which coaches students until they are ready to fly for a CFI with a pulse, who is a mentor and coach rather than a primary instructor.
The second e-mail reported that the professional pilot program at the Fox Valley Technical College in Oshkosh, Wisconsin, had its two new Redbird FMX full-motion sims up and running. I responded not with if I’d visit, but when? I’d have to wait until noon.