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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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Gray Skies and Memorial Day Reflections
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Most Americans today have but two connections with those who serve and have served in the military, and especially those who have perished in that service. The first is the hollow seconds it takes to utter “Thank you for your service,” an seemingly autonomic reflex when seeing someone in uniform. The other occurs should they see a film about any of our many conflicts. Since America’s last declared war, which ended 70 years ago, Memorial Day has become an annual celebration of patriotic hypocrisy, when people might notice that the American flag they ran up their front yard pole last year is faded and frayed and, maybe, add a new one to their celebration’s shopping list.
True appreciation is measured by our depth of experience and understanding. Today, less than 1 percent of the population reaps the benefits resulting from the service and sacrifice of the less than 1 percent of the population who serve the politicians elected by the majority of people who separate, and have no direct involvement with, these two segments of society. And this disconnection and separation is no accident.
During the war Congress declared the day after the attack on Pearl Harbor, citizens didn’t thank members of the military for their service because everyone, one way or the other, was involved and contributed to a successful outcome. For many, Korea is a forgotten conflict, but it set the stage for all the undeclared conflicts that followed. War, as Eisenhower warned, is big business, and public protest is a political challenge that complicates their promotion and prosecution. Vietnam proved this, and people protested because the draft could send any one of them into harms way. And on the nightly news they would watch their loved ones suffer for a cloudy cause.
The politicians, most of whom have never served and faced the possibility of a sudden end to life, solved this problem by replacing the draft with the all volunteer force. And never again would the news media work with the unrestricted access it had in Vietnam. Nor could they show the return of flag-draped transfer cases. “Privacy,” the politicians said, but certainly a planeload of flags bedecked boxes says something more—something different—than a missing-man flyover and the single triangle-folded flag presented to the family to conclude a funeral’s full military honors.
Understanding is the antidote for hypocrisy, and films that promote and criticize America’s endless series of conflicts can contribute to it. Watching requires more involvement than saying “Thanks” to a uniformed stranger. Put yourself in the protagonist’s place and wonder how you—and your family—would feel and deal with the consequences projected on the screen. Build on this understanding, test its veracity with questions and settle for nothing less than a direct answer to it, make it a resource that guides your daily decisions. In so doing you can honestly honor those for whom this holiday was created after the nation’s most catastrophic conflict, the U.S. Civil War, which took the lives of roughly 620,000 individuals in military service. — Scott Spangler, Editor
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Biz Av Pilots Have Eaten Enough [Training] Cake
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Publisher’s Note: Every once in awhile we receive a story that’s well enough written on a timely topic that we know we want to publish it after just the first read.
Meet Kyle and Linda Reynolds from Flight Level Group. Kyle is a business aviation pilot and his wife Linda is a teacher. Together they created a company calling for a return to learner-centered training in the business aviation world that focuses on the needs of the individual, not simply the demands of the regulator.
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Biz Av Pilots Have Eaten Enough [Training] Cake: The Coming Revolution in Aviation Training
There is a growing hunger among the brethren for flight and ground training that is meaningful, applicable and enjoyable.
And yet the response from the regulatory agencies is all too familiar, “let them eat cake!” So flight departments gorge themselves on the latest and greatest delicacies of technology, products or speakers in an attempt to appease regulators, allocate their training dollars, and impress their colleagues.
Despite these costly attempts to make the skies safer, a cloud of apathy keeps dampening the safety records. Experts say it is the human factor, the people themselves, which keeps the accident rate from further decline. Despite an ever increasing amount of training, people just don’t seem to be taking very much of it to heart. For those who are tired of eating cake, a bit of a revolution is beginning in the training industry.
Cognitive Overflow
One of the reasons training today brings lackluster results is that it focuses mainly on the cognitive domain (where training becomes understandable).
A steady diet of facts, data, processes and historical accounts is offered in order to increase knowledge. This is good to a point. However, so much emphasis has been placed on the acquisition of knowledge, that most people have experienced cognitive overflow. This is when the amount of data received is so quick and so extensive that there is not time to actually “think” about its validity and practicality. In fact, the cognitive stream often becomes so intense that people become grossly full and actually begin to have an aversion to more knowledge.
It’s easy to see why people become apathetic. If we accept the fact that an information diet is all a pilot needs, the cravings for something more will disappear. It’s more comfortable to be apathetic than hungry. If the aviation training industry is to grow stronger and increase in professionalism, training needs to address more than the cognitive domain. The affective domain (where training becomes meaningful) and the psychomotor domain (where training becomes applicable) also need to be activated each time a training event is held.
Case in Point
One corporate pilot recently commented at the conclusion of a safety seminar, “If you listen to too much of this stuff, you’d never get in the cockpit.”
This is cognitive overload. Without concrete examples of how the safety information can be used to make his department safer, this pilot decided to reject its validity. Who wouldn’t? It seems more sensible to forgo the safety seminars and keep one’s peace and confidence than to live in fear.
Aviation training must give pilots a wide variety of creative solutions to safety concerns. Pilots must be encouraged to modify these solutions and personalize them to the needs of their department. Without meaning and application, the knowledge instilled will pass through the recipient without bringing any lasting change. With meaning and application, safety reports and statistics can become a challenge to a creative means of sharpening skills, practices and procedures. (more…)