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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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Don’t Pass the Historic Wendover Airfield By
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During World War II the US military carved thousands of airfields into the American landscape. Of the hundreds that still serve our aerial infrastructure, few maintain a general connection to their original mission. An exception might be Utah’s Wendover Army Airfield, a heavy bomber training base, established in 1940 because it was surrounded by desolate desert, perfect for needed bombing ranges. Many people, not just aviation history geeks, might know of it because it is frequently mentioned in the history of America’s use of nuclear weapons. Wendover is where the 509th Composite Squadron came together and trained for its missions over Hiroshima and Nagasaki.
Situated just across the Nevada border, about 400 miles down Interstate 80 from Reno, it is 120 miles west of Salt Lake City. On a 1974 motorcycle trip home to Chicagoland, I passed the exit for this small city (with the 2010 census counting 1,400 residents) because of Above and Beyond, the 1952 film about Paul Tibbets, the commander of the 509th. His wife accompanied him to Wendover, and the bleakness of these scenes led me to believe the base was miles distant in the surrounding desert, so I kept riding east. (It turns out that Davis-Monthan AFB stood in for Wendover.) Yesterday, when I learned about the relatively new Historic Wendover Airfield Museum, Google maps added another line item to my life list of missed opportunities.
Given its remote location, the airfield has served various military units off and on since VJ Day. Declared surplus for the final time in 1976, the government deeded most of the base, including runways, taxiways, hangars, hospital complex, and several warehouses to the City of Wendover for a civil airport (ENV).
The airfield made the National Register of Historic Places in 1975, the year after I passed by. Then, just a few more than 100 of its 668 World War II structures remained. Exploring them would have been more than worth the time I would have spent off the road. But the good news is that today, there are almost 90 surviving buildings, including the now-restored “B-29 Hangar” named for its most famous occupant, the Enola Gay, and the museum has a multiphase plan to restore them. Supporting this effort is the “Save Where They Walked” capital campaign.
No one knows whether I’ll pass that way again, but until then, I’ve already made a number of virtual visits on the first-class Historic Wendover Airfield Museum website, and once I’ve gotten this story scheduled for its JetWhine debut tomorrow morning, I’m spending the rest of the afternoon on the museum’s virtual tour. — Scott Spangler, Editor
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A Practical Solution to Airline Service Hell
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Everyone knows airline flying stopped being fun 20 or 30 years ago once a deregulated industry realized just how cheaply they could package and sell their product.
Along with searching for a low-price fare these days, we’ve all had to get used to the generally lousy customer service that comes with packed airplanes. When was the last time an airline employee listened to anything you said without responding there was nothing they could do about it?
Then flying went from bad to worse when COVID-19 hit in the early months of 2020 and demand fell off the edge of the planet. It didn’t take the airlines long to solve the problem as they tried to rid themselves of staff they wouldn’t need to pay as hundreds of aircraft were grounded. They offered thousands of pilots the opportunity to take early retirement, despite the $54 Billion the U.S. government shelled out to keep layoffs to a minimum. Many accepted the deal before the airlines realized they’d collectively shot
Courtesy IMGFLIP themselves in the foot. Near Labor Day 2020, the airlines also collectively began to realize they were going to need more pilots soon … much sooner than they’d ever thought.
Oops
Since Memorial Day this year, the need for pilots became dire as the airlines began canceling 10s of thousands of flights, stranding passengers everywhere. My daughter was on her way home from JFK to ORD that weekend when American canceled her flight after she and her fellow passengers sit at JFK for nearly four hours without so much as a sandwich or a cup of coffee. It took her two and a half days to finally make it to ORD. On July 3rd, the airlines canceled about 1,500 flights.
Just when most travelers thought airline flying could not possibly get worse, it did as inflation saw ticket prices skyrocket. Strangely, at least to me, people kept buying overpriced tickets, although I have a feeling that’s about to end. In addition to higher fares, packed airplanes, and lousy customer service, the airlines have now descended to another new low spot … they’ve become unreliable.
But at least the U.S. airlines are still safe with almost no passenger fatalities in more than a decade. But how much longer can they continue raising prices on a product they often can’t even deliver? (more…)
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Indestructible: The Rest of the Pappy Gunn Story
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During a bimonthly recon of a used bookstore hoping that some unexpected title would catch my eye, Indestructible: One Man’s Mission That Changed the Course of World War II arrested my scan with the image of a red Beech 18 wearing prewar US red-dotted star roundels and red and white tail stripes. “A True Story,” it said, so I was curious about the Beech 18’s unusual livery. Pulling John R. Bruning’s 540-page tome from the shelf to find a back-cover explanation, the book explored the life of Paul Irving Gunn, better known during World War II as Pappy, engineer of the famed B-25 gunships that ravaged Japanese vessels with their low-level strafing runs.
My mistake was not buying this book. My mistake was starting to read it after dinner. Bruning is an efficient, clear, concise, and comprehensive writer telling a compelling story. Every page leaves you wanting to know what happens next, so you turn the page again and again and again. I didn’t get much sleep that night, or much work done the next day. If your curiosity compels you to open this book, don’t say I didn’t warn you.
Before World War II and his trial-and-error engineering that turned a pirated Dutch B-25 into the gunship scourge of the South Pacific in 1942, Gunn was known by all, including his family, by his initials, PI. Those letters also represent the Philippine Islands, which is where the Gunns lived when World War II started, because PI was the driving force behind the nascent Philippine Air Lines, whose fleet consisted of four Beech 18s, all painted red, the favorite color of his wife, Polly.
With some of the only flyable aircraft in the area after the Japanese attacked the Philippines in 1941, PI was flying the Beech 18s for the Americans when the Japanese invaded Manila and interned his wife and their four children two boys, Paul and Nathan, and two girls, Connie and Julie. Bruning employs a nuanced organization that reveals the family’s existence at the Santo Tomas Internment Camp and PI’s efforts to reach Manila and free them.
This alternating narrative shows how PI became Pappy and how his life experiences led to his legendary accomplishments. In all of the other accounts I’ve read about him, people called him Pappy because he was older than those he served with, and that’s it. These presentations never explain what was behind this age difference. Pappy was older because he’d served 20 years as an enlisted Naval Aviation Pilot.
As a member of Fighting Squadron (VF) 2, known as the Flying Chiefs because many of its pilots held that rank, PI flew from the Navy’s first aircraft carrier, the USS Langley, and several that followed, including the USS Lexington and USS Saratoga. But he also flew float-plane scouts launched from cruisers and participated in simulated airborne attacks on Navy ships and stations. The make-it-up-as-you-go environment of this aviation era, when aviation, naval and otherwise, was fighting tradition unimpeded by progress, is what made Pappy such an innovator. And pervasive interservice rivalries perhaps explain why other accounts do not include this essential information.
Before catching up on my sleep after finishing the book, it was clear that Indestructible would make a great movie. And it turns out that it almost was. Sony acquired the movie rights to Bruning’s book in 2014. Mark Gordon is listed as the producer, and the only other information the interweb revealed is that the film is in “development.” All we can do is hope. — Scott Spangler, Editor