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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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Who Will Fly for America Tomorrow?
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So, you wanna be a professional pilot, huh? Despite the economy, there will be a good number of vacant cockpit seats in the next decade or so as the last of the baby boomer bulge reaches 65, the airline pilot retirement age. If you are a Wall Street bonus baby, go for it. If not, are you up to the challenge?
If you’re not yet a pilot, earning the minimum pilot certificates and ratings—private and commercial tickets with instrument and multiengine privileges—will run you $50K or more. If you don’t have a college degree, add the cost of two-to-four-years tuition, books, and other fees, a total well into six figures.
Now, how are you going to pay for it? If you’re not a Wall Street bonus baby, you’ll be hunting for student loans. Good luck. Getting any student aid is not easy, and it is especially hard if you’re not enrolled in a college program that qualifies for federal Title IV loans like the Stafford.
Sallie Mae is one of the last lenders that makes career training loans to students learning how to be a pilot, a dental hygienist, a massage therapist, or other careers like them. Because credit is tight, earlier this year Sallie cut the number of approved schools in most career fields roughly in half. Of the surviving 5,000 career training schools approved for loans, says a Sallie Mae rep, two dozen are flight schools.
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Why Being Geeky is Cool
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Most of you probably know that a few months back I was abducted at propeller point and forced to assume co-host duties at the Airplane Geeks. About that same time, I met Dan Webb, my other co-host, a truly brilliant young man who continues to impress me with his knowledge of the financial side of the airline industry. Of course, I don’t can’t ignore my co-host Max Flight, one of the initial brains behind the Geeks Show. Without his dedication to professional production editing, our show be nowhere. Then, of course, there’s our newest recruit, historian David Vanderhoof, not to mention Steve and Grant at the Airplane Geeks Australia Desk.
So here’s my problem.
In some of the most recent episodes of Airplane Geeks, I’ve been accused of blatant self promotion and a total lack of understanding about the fine line between truly funny radio and lame humor. I want it known right here and now, that if you do listen to that most recent episode of Airplane Geeks, you’ll hear someone promoting himself much more than I ever could. Brett Snyder, AKA the Cranky Flier, did a way better job of promoting himself than I ever have. Of course, he did have a pretty cool new service as a topic this week, something that really helps.
Brett is now offering the Cranky Concierge which he told us allows anyone ” … to have their own real-live airplane dork to solve all of their air travel problems.” These would include flight planning, flight monitoring, delay and cancellation service and – my favorite – post-trip dispute assistance. The service went live just last week. One comment I saw … “Cranky has always been our go-to guy for advice on how to travel.” Nice endorsement. Wonder if United is listening?
So here’s the deal. I’ll go back and work on my jokes and you go check out Cranky’s new business.
And then, of course, be sure and visit iTunes and subscribe to The Airplane Geeks where a bunch of cool guys hang out each week and talk about everything aviation. We have Cranky on that one … at least for now.
BTW, if you’re wondering why The Airplane Geeks hosts are all men, the answer is simple. No women have applied for the job … yet.
Technorati tags: The Airplane Geeks, Cranky Flier, Cranky Concierge, air travel, business aviation, general aviation, Jetwhine, Max Flight, Dan Webb, United Airlines -
Chance of Better Aviation Future is 51%
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In the grand scheme of American aviation, at least as the FAA sees it, amateur-built aircraft aren’t even on the radar sweeping through regulated skies. Created in home workshops and comparatively unfettered by the bureaucracy, these flying machines have been the nucleus of aviation’s success for more than half a century. And with the FAA’s second attempt at updating the policy that oversees the certification of these important machines, it looks like this will continue for another half century.
For awhile, I wasn’t so sure. The FAA’s first attempt (presented in greater depth in Homebuilding: Complexity is the Price of Progress) brought ineffective bureaucratic complexity to homebuilding. What was always simple and straightforward would soon suffer, it seemed, dead-tree demands imposed on facets of aviation that shine more brightly on the regulatory radar scope. Fortunately, the family of amateur builders, its manufacturing relatives, and their representatives raised their collective voice and said, “Hey, wait a minute!”
What happened next honestly surprised me: The bureaucrats listened! (EAA provides an excellent summary of the new policy, or you can read FAA ORDER 8130.2F CHG 4 and Advisory Circular 20-27G for yourself.) They preserved all that was good about homebuilding, keeping it a fertile breeding ground for aviation innovators and not impeding their creative processes with unnecessary bureaucracy.