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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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Cessna 400 Goes Eyeball to Eyeball with Cyclone Gene
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We’ve all been following a truly interesting flying story the past few days here at Jetwhine, simply because a 6,500 NM flight in a Cessna 400 – most of it out over the open waters of the Pacific – is hardly routine. Ferry pilot Garry Mitchell has been sending us updates of his progress on the way to deliver the first 400 from Bend Oregon to Australia. And flying the airplane there sure makes for a more interesting story than packing it up in a crate and slapping some stamps on the outside.
Today, Mitchell’s update comes from American Samoa.
For those geographically-challenged – as Mr. Know It All might say – Samoa is about half-way between a lot of Pacific water and a good deal more before Australia.
Actually, reaching Samoa means just a bit more than half the trip has been completed. And except for a little cyclone in the way, the rest of the trip should be … a snap.
Here’s a great enroute report from our man on the street – well, over the water really – Garry Mitchell from his overnight spot in Samoa.
“I’m hoping Jetwhine readers will find this post exciting. It sure is for me out here in the middle of the Pacific right now.
We’re currently poised for a departure in American Samoa. Sitting in between Fiji and Vanuatu is a huge tropical cyclone, called Gene. As we departed Hawaii it looked like we’d slide beneath, taking advantage of the tail winds. However, it elongated and the eye has moved right onto our track, making the southerly route way to long. It looks like we’ll head to Fiji for fuel and track north around the top, taking the head wind on the nose, so to speak. We’ll come within 300nm of the eye of the cyclone, as we pass to the north.
We departed Hollister Airport in California on Wednesday and spent the first four hours at 8,000ft. We encountered 30-knot winds from the north that at times gave us a head wind component of ten knots. After about four hours we climbed to FL180. The Cessna 400 climbed easily at 1300ft/min right up to 18,000ft. We had nil winds all the way after that.
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JetBlue Takes the Pilot Shortage Problem into Their Own Hands
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We’ve all been talking about the looming pilot shortage – as well as a shortage of aviation mechanics. Some airlines have already begun feeling the pinch as the requirements for future cockpit members have begun to plummet in a simple supply and demand equation. With very few exceptions, the conversation about a shortage has fallen upon deaf ears with most of it being a debate about whether or not the shortage exists or not. American Airlines yesterday announced it might cancel some February flights due to a shortage of pilots.
Ads have also begun appearing all over the industry recently, early signs that the number of quality pilots has begun to draw thin. Emirates is conducting pilot interviews this week in the U.S. and Canada because they can’t find enough people. More and more Americans are now seeing an overseas job as much more palatable than in years past. Coupled with continued labor unrest here in the states, and lucrative benefits packages – often including tax-free income – many U.S. pilots are leaving for more fertile ground overseas.
But here in the states, we have done very little to invest in a new pilot stream. Now JetBlue is grabbing the bull by the horns, although the airline said it is not yet facing an actual shortage. Most experts see JetBlue’s efforts as astute planning however.
The JFK-based airline announced plans abut a unique partnership with Embry-Riddle Aeronautical University (ERAU) and the University of North Dakota (UND) in a mentoring program they call the Aviation University Gateway. JetBlue is also linking up with CapeAir in Hyannis, MA to offer pilots an opportunity to gain flying experience before interviewing with JetBlue.
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Aviation’s Favorite Blog Jetwhine Welcomes A Real Expert … Mr. Know It All
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Hello Jetwhine readers. Today we’re going to light up those little capillaries inside your cranium.
You all think you’re so smart don’t you? Well, here’s your chance to prove how much you know about aviation, general aviation specifically today.
Jay Ward Productions and Classic Media, Inc.
First the prize … a copy of Robert Mark’s new book, a Professional Pilot Career Guide, goes to the person who correctly answers this question.
“What aircraft was also known as a Mescalero?”
Sorry, no hints. We’ve been chastised for making these too easy anyway.
Put on those thinking caps and start typing ASAP and a copy of this awesome new book could well be yours. And no, there is no truth to the rumor that this author’s wife has made threatening remarks about his future on Earth if he fails to rid their basement of all the boxes of these volumes there gathering dust.
Technorati tags: aviation test, Professional Pilot Career Guide, Jetwhine, Pilots, pilot careers, general aviation, flight training