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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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FAA’s Babbitt Might Just be a Standup Guy
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FAA’s new administrator for the past 70 days, Randy Babbitt, last week spoke about regional airline safety centered around fallout from the crash of Colgan 3407. The audience in Washington was receptive, helped in part by the fact that they were all were members of the Air Line Pilots Association
where Babbitt was once president. According to the FAA standards Babbitt helped initiate a decade ago when he was still at ALPA, standards that might have prevented the Colgan accident, all Part 121 airline pilots were supposed to be trained and fly essentially the same way. One Level of Safety it was called. As Babbitt rightly pointed out however, the single standard for all sounds good, but just hasn’t worked out in reality.
Sure pilots all train in simulators, but low-time pilots training in high-tech equipment are still low-time pilots. Then there are the scheduling issues that relate to fatigue that major pilots don’t often encounter, or the fallout from low pay rates and on and on. Although the publicity on these topics is relatively new, the issues are all old, some dating back at least 20 years. What I liked about Babbitt’s speech was that he called upon pilots to take part in the solution … not all of it, but some of it.
He said, …
Each of us has a responsibility here. We know as professionals that it’s up to us to earn respect and operate professionally. The tools are already out there for us to improve our performance as professionals. But your chief pilot can’t make you use them. The aviation safety inspector and the check airman can’t make you use them. I can’t make you use them. Only you and you alone can ensure that the tools are used properly.
Jetwhine readers know I’m generally no big fan of the FAA, nor the TSA. But it’s never been personal. It’s always been about results, nothing more … or less. So for now, I’m ready to give Mr. Babbitt the benefit of the doubt, especially since he speaks as if he does understand some of the problem. But I will be demanding that he earn our industry’s respect much the way he’s challenging the rest of us.
Babbitt added,
… just having experience isn’t enough. The people with the experience need to make sure they’re mentoring the ones who don’t have it. This needs to become part of our professional DNA. If you’ve got experience and you’re not sharing it, you’re doing a disservice to our profession. This is not the time to be a man or woman of few words … I can’t say this any more directly than I am right now: We all have to take on additional responsibilities whether we’re legally required to or not. This is about safety, and safety is about saving lives. If you think the safety bar is set too high, your sights are set way too low.
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Pilots: Who Needs Them?
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Qualified professionals to operate the world’s fleet of new, high-technology aircraft are more necessary than ever before, despite a growing proliferation of UAVs. Unfortunately, airline management and their pilots are not always on the same page when it comes to who should do what and for how much money.
Thanks to a loyal Jetwhine reader, it is clear that sometimes airline management does get the point, as we see here. And what’s next, NATCA’s air traffic controllers with a real contract? Who knows, it just could happen.
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Stars Aligning for Brighter Aviation Future
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Ensuring aviation’s future by encouraging more people to fly has been attempted by many programs in the past. Despite their good intentions, their collective results are ultimately measured by the ever shrinking pilot population. But several events at EAA AirVenture Oshkosh are chipping away at my skepticism. They are tangible, visible signs that the necessary stars are aligning, perhaps the best chance ever for success.
I saw the first star at the National Association of Flight Instructors Meet the Master’s Breakfast on Thursday, July 30. New FAA Administrator Randy Babbitt was there to present the Jack J. Eggspuehler Award to the Jeppesen Aviation Training Solutions Team for its enduring and “significant contribution to flight instructors, flight instruction, and aviation education.”
Before presenting the award, Babbitt mentioned that he started his career in general aviation and was a flight instructor. Hmm, that’s something I’ve never heard from an FAA administrator. But what he did next really got my attention.