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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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Nouns of Knowledge
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Semantically, Students and Learners Are Not Synonymous
The AOPA online headline about the 2020 update of the Aviation Instructor’s Handbook immediately captured my attention because — What’s Behind the FAA’s Switch from Student to Learner? — signaled an inversion of educational intent.
Looking for an answer, the author, Dan Namowitz, asked Chris Cooper, AOPA’s director of regulatory affairs who’s on the FAA work group that focuses on training and testing initiatives.
The FAA changed its nouns to address a socially self-inflicted problem that contributes to diminished learning—status. “The change from student to learner started several years ago in an industry working group,” Cooper said. “Industry wanted to get away from using the word “student’ because traditionally we think of student as in “student pilot’ or a beginning student pilot/mechanic.”
After two years of debate, which included options that included “pilot-in-training,” the FAA went with a term some school systems and institutions of higher learning use for their enrollees—”learner”—an academic buzzword that implies “the concept of lifelong learning.” In addition, Cooper said the new nouns would appear in other handbooks as the FAA updates them.
Becoming knowledgeable and proficient in any aviation arena is a daunting enough challenge without complicating it with a new lexicon that replaces long established words that communicates their meaning clearly, concisely, and simply.
In the Fifth Edition of Webster’s New World College Dictionary, the transitive form, to “learn” is “to get knowledge of (a subject) or skill in (an art, trade, etc.) by study, experience, instruction, etc.” In other words, it is the action employed by the noun, student, who is “a person who studies, or investigates” something.
The implied status of the word student is a consequence of individual semantics. To me, student is a badge of honor that one must earn by every day effort. It defines those who are so curious about a given topic that they will pursue every scrap of information, no matter how tangentially related. Like ingredients of knowledge, they all go into their cranial pantry, ready to use in a recipe for a new idea. A teacher takes the next step. The best teachers are students who share what they have learned with those who share a similar curiosity.
But that is not how education has worked in America for the past 30 odd years, when test results became more important than one generation imparting its acquired knowledge to the next generation. This testing transformation turned classroom teachers into presenters who had 180 days to prepare their charges to take the test that would satisfy the demands of their overseeing bureaucrats and elected officials.
This leaves no time to present anything more than the information needed to take the test. If a member of the class has a question related to the subject being presented, there’s no time for a curiosity-satisfying educational tangent (unless you were, like me, a substitute teacher). The goal for those enrolled is consume and regurgitate a prescribed compendium of skills and facts to pass the tests associated with that list. Aviation is no different.
Another consequence this fire hose education philosophy of rote learning of the facts, figures, and skills needed to pass a test is that “learners” are conditioned to automatically accept and believe what those in a position of authority tell them. As with educational tangents, there is no time for critical thinking and the questions its generates. [This may be one reason politicians pursue testing as a primary measurement, because people are easier to lead (and deceive) when they only believe what someone they hold as trustworthy tells them something.]
Oddly, it surprised me that Chapter 2: Human Behavior of the 2020 instructor’s handbook accurately described today’s “adult learners,” who are products of the American education system as goal-oriented 30-somethings with short attention spans and the desire for immediate gratification.
The FAA didn’t use those words, but the handbook described learners primarily interested in the skills, facts, and figures they need to pass a test than acquiring knowledge, and understanding how to use it. The first two paragraphs of Chapter 3: The Learning Process describes the hypothetical first flight of a learner who focuses on performing the demonstrated skill step-by-step. Later in training, if the instructor asks this learner “a question or to perform two tasks as once,” the learner loses their place and must restart from the beginning.
Under the subhead The Check Ride, the next two paragraphs say this learner has become “a different person.” The learner “does not simply reiterate facts—she applies her knowledge to solve the problems” the instructor presents. This foreshadows the forthcoming discussion that includes the basic levels of learning — Rote, Understanding, Application, and Correlation — 15 pages later.
What this educational theory presentation does address is whether the curriculum prescribes “problems” at certain points of training (Lesson four, engine failure), or whether the instructor has the ability to recognize a potential problem (say, flying a very wide traffic pattern) and the instructional freedom to safely create a learning experience that addresses it (like an engine failure)?
This situation is not new; rote learning has always been the Achilles heel of aviation education. The problem remains the same; only the words that define the participants have changed.
Regardless of the semantic terms, the Boeing 737 Max debacle is the perfect example of difference between students and learners. The consensus of what I’ve read about this sad situation says that learners accepted what the manufacturer and training center instructors told them about this airplane and its systems. To date, I haven’t heard of any student, driven by curiosity, to invest the time and effort to dig into the technical details before the loss of life brought it to everyone’s attention. And this is, perhaps, the prime example of why aviation needs more students than learners. — Scott Spangler, Editor
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Book Review: Empires of the Sky
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A Concise Look at Human Flight with an Unexpected Focus
With my knowledge bank bereft all but the most rudimentary information about Zeppelins (aka rigid airships), my curious eye immediately focused on the tail end of the Zeppelin under the title, Empires of the Sky. (Following the airship to the backside of the dust cover identified it as the Graf Zeppelin.) The subhead of Alexander Rose’s 600-page tome—Zeppelins, Airplanes, and Two Men’s Epic Duel to Rule the World—lured me between the covers.
I assumed that German Count Ferdinand von Zeppelin, the eponymous airship’s creator, might be one of them. Or maybe it was Hugo Eckener, who turned them into a reliable form of air transportation (at least until the Hindenburg arrived at Lakehurst, New Jersey, on May 6, 1937). But who was the other? It was someone I would have never considered—Juan Trippe, of Pan American Airways.
This at first seemed an odd couple, but as I read, it was a genius paring because both men were pursuing the same goal, to provide reliable transatlantic air service. And it provided an important perspective, refocusing my grouping of things that fly and things that do not. Rose set the stages for his book by sharing Octave Chanute’s concise explanation of the two camps hoping to solve the problem of flight more than a century ago.
Writing Aerial Navigation in 1891, Chanute’s two competing schools were addressing the challenges of flight:
“1: AERONAUTS, who believe that success is to come through some sort of balloon, and that the apparatus must be lighter than the air which it displaces.
“2: AVIATORS, who point to the birds, believe that the apparatus must be heavier than air, and hope for success by purely mechanical means.
“Curiously enough, there seems to be very little concert of study between these two schools. Each believes the other so wrong as to have no chance of ultimate success.”
Rose starts with the aeronauts, because they flew first. In elegantly crafted prose, he brings aerostat novices up to speed on the contributing experimenters and the technological contributions. And then he reveals an elegant surprise. Ferdinand Zeppelin made his first flight in a tethered balloon in St. Paul, Minnesota, on August 19, 1863, with one Professor Steiner, late of the Union balloon corps. A military officer, Zeppelin witnessed balloon mail from Paris in 1870, during the Franco-Prussian War.
Four years later, following a fall from his horse, he awoke from a “fevered dream” in which he saw the flimsy predecessor of what would become his eponymous Zeppelin, so named by his volunteer PR man, Hugo Eckener, who went on to take over the company following Zeppelin’s death. Rose evenly balanced the human aspects of the story with the technological side that ranged from the development of the rigid air ships and their duralumin metallurgy to their military service during World War I.
Empires of the Sky also takes an illuminating look at American airship efforts and their ties to Germany. And Rose devotes an equal measure of research to the camp of aviators. Here I found fewer rewarding surprises, but there were a good number of them. Most of them told the Pan Am story, how it developed its flying boats and established its Pacific and then Atlantic routes. While I can appreciate what Trippe and Pan Am achieved, I learned that how he achieved them would hold him in good stead in the cutthroat, backroom backstabbing corporate culture of the 21st century.
Whether you lean toward Team Aeronaut or Team Aviator, or you are interested in learning more about them and how they came to be, Empires of the Sky is a rewarding and worthwhile investment of your time. I do have one caveat, however, don’t start reading it after dinner when you have to be at work the next morning. — Scott Spangler, Editor
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Inattentive Oshkosh Migrants Will Find No EAA Roosts at Wittman in July 2020
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It is a statistical reality that regardless of the methods of dissemination, roughly 10 percent of the population will not get the word. Or they will forget they got the word and reflexively follow their atavistic inclinations. Some creatures, like the swallows who migrate to San Juan Capistrano every spring from their winter residences in Argentina, don’t have a choice because conscious decision making is probably not among their sentient capabilities. Pilots don’t have this excuse, and those who migrate to EAA AirVenture Oshkosh this July will find no roosts at Wittman Regional Airport.
In an attempt to catch the attention of pilots who were not paying attention, or might forget that EAA CANCELED AIRVENTURE 2020, Wittman Regional Airport posted this notice on its website and sent an email to everyone on its mailing list.
AIRPORT STATUS DUE TO CANCELLATION OF 2020 EAA AIRVENTURE
We’re all disappointed with the cancellation of EAA AirVenture Oshkosh 2020, as it means so many different things for everyone who attends. For thousands of aviators, flying to Wittman Regional Airport (KOSH) is a highlight in the logbook.
As AirVenture 2020 is not taking place, Wittman Regional Airport will operate normally as a public use airport with contract tower services. For those considering flying to Oshkosh in late July, it’s important to manage expectations about what is permissible:
- *Aircraft parking for itinerant traffic is available on the Terminal / Basler FBO Ramp. No permit has been obtained for aircraft parking or camping on any turf areas of the airfield and therefore is not permitted.
- *No buildings or facilities on the AirVenture grounds will be open. Those attempting to camp will be asked to move to Terminal / Basler FBO ramp parking or depart.
- *The Warbird / Homebuilt camping areas near P-1 taxiway will not be open. Papa 2 taxiway (Boeing Plaza) will not be accessible.
- *There will be no access to EAA facilities from the airport. EAA did not obtain a Wisconsin temporary campground permit for Camp Scholler in 2020, so it is illegal to accept or allow campers there this year. The EAA Aviation Museum also will be closed to the public through July.
For those who still want to fly to Oshkosh during AirVenture week, we encourage you to park at the Terminal / Basler FBO ramp, stay at one of our local hotels, and enjoy some of Oshkosh’s hospitality. Please coordinate with Basler Flight Service to arrange any ground handling needs.
And if you’re thinking of flying in for a visit, following the operational items in the OSH message, make sure you add the Covid-19 status to your preflight planning. It seems that Oshkosh, for the past few days, has been leading the state in new cases, especially among 20 and 30 year olds. Who knows what it will look like in July?
And for the 10 percent who didn’t get the word, EAA is hosting a safer, more economical replacement for your annual Oshkosh migration with a virtual celebration, EAA Spirit of Aviation Week, July 21-25. I’ll be there, but on my trips into town during the week, I may swing by Wittman Field to see who didn’t get the word. — Scott Spangler, Editor