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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.
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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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
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Reporting for Duty: AARP Studios Shares Veterans’ Stories
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The bait dangled by AARP Studios was the 10-minute Reporting for Duty documentary about Lt. Carey Lohrenz, who in 1994 became one of the first female aviators to fly the F-14 Tomcat. The latest of eight episodes so far produced, the YouTube channel offered another tantalizing aviation morsel, “The Untold Story of the First Top Gun Competition,” with a P-47 Thunderbolt thumbnail that made it even more intriguing. The other episodes tell the stories of how service in the Marines and Army and Air Force changed the course of their lives.
The episode is titled “Flying an F-14, I Can’t Believe it Was Legal,” and it wasn’t until our elected officials finally surrendered their stereotypical prejudices. Lohrenz says in the documentary’s opening minutes that she always knew she wanted to fly. She graduated from Aviation Officer Candidate school in 1991 and wanted to fly fighters “because they were the cream of the crop,” but at the time the law prevented females from pursuing combat roles.
Women were flying for the Navy, but not in combat billets. Naval aviation training takes about two years, she explained, and maybe the law would be repealed by the time she finished her primary training and proclaimed her top six preferences among the Navy’s aviation pipelines, tactical jets, helicopters, and multiengine. The Secretary of Defense Les Aspin, she said, lifted that restriction on the day her class filled out their dream sheets. A top performer in her class—one of five women selected to fly combat aircraft—Lohrenz reported to the replacement air group in 1994 to begin her transition into the F-14.
Learning a new airplane, especially one as complex and challenging at the Tomcat, is never an easy evolution. With an unspecified number of men (who saw women as unwanted, unqualified interlopers in their y chromosome domain) actively working to make her transition harder than it needed to be, one wonders how they would have performed had the stereotypes been reversed. Lohrenz’s success is a tacit spotlight of her superior abilities and resilience. She put it this way, “If you don’t work through the hard stuff, you’re never going to get to the awesome.”
Providing perspective on flying the F-14 is Ward Carroll (see Review: Ward Carroll, F-14 RIO), who explained the relentless scrutiny all carrier aviators face, including grades for every carrier landing (of which she logged 172). It should surprise no one that the men in charge employed a double standard for female aviators, imposing restrictions on them and not their male peers who tallied similar grades. The challenge of being a pioneer, said Carroll, is that these women “are carrying the weight of an entire gender on their shoulders, because if they failed it would set American female status back decades.”
This situation led to a Naval Inspector General investigation that revealed (big surprise) “that the Navy was ill prepared to integrate female pilots into carrier-based flight crews.” As a consequence, Lohrenz continued to fly, but not in the F-14. But, as Carroll pointed out, she paved the way to female aviators, whose numbers continue to increase and who fulfill squadron missions without stigma.
Lohrenz now employs the lessons she’s learned as a strategic planning consultant and keynote speaker. “Not taking a risk is the biggest risk you can take,” she says. “Courage is not the absence of fear, it means you feel the fear and go for it anyway.” And that should be a lesson for us all. — Scott Spangler, Editor
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AirVenture Notice Announces Start of Summer
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Some may say the transition to Daylight Savings Time is the harbinger of warmer weather, but depending on where you reside (and Mother Nature’s unpredictable climate), this is little more than a chronological tease that primes the wanton emotional relief of winter. (It doesn’t help that my thermostat is still in heat mode at the end of May.) The real start of the summer season of sunny, warmer weather is the release of the year’s EAA AirVenture Notice.
The new nomenclature is but one of this year’s changes. For too many years the AirVenture NOTAM came and went with so few changes that too many pilots relied on rote muscle memory to make it from their home drome to Fisk, where they followed the tracks to Wittman Regional Airport. If memory serves, with Mother Nature’s spiteful mood, this rote reliance resulted in a rough arrival in 2019. Say what you will about the pandemic cancelation of OSH 2020, the break gave the powers that be time to make some long-needed improvements.
Perhaps the best measure of success of the changes were the record number of people who arrived in such a measured way that the controllers in the world’s busiest control tower had time to actually have brief two-way conversations with a number of the arriving aviators. Or maybe the ATC audio shared on the flight line PA pylons was a hallucination. Either way, change is good, and by tweaking the procedures detailed in the AirVenture Notice, pilots not wanting to be publicly embarrassed by their rote reliance will read it before they arrive for AirVenture 2022, July 25-31.
Early birds hoping to avoid the arrival procedures take note! The 32-page AirVenture Notice takes effect at Noon, Central Daylight Time, on Thursday, July 21, and remains in effect until 6 p.m. on Monday, August 1. It also itemizes some of the bigger changes on the cover, starting with Notice replacing NOTAM. The last bullet point announces that camping is not allowed at Appleton International Airport (ATW).
Between these bullet-point bookends are decommissioned VOR-DME waypoints at Rockford, Illinois (RFD), where EAA held its annual convention until it moved to Oshkosh in 1970, and Manistee (MBL), in Michigan’s upper peninsula, for those crossing over the top of Lake Michigan instead of across it. Rounding out the decommissionings is the Victor 9 airway. And just to make things interesting for those working their way north, Milwaukee is holding its annual Air & Water Show July 22-24, which comes with its own TFR.
The notice not only guides pilots in their preflight planning and the various VFR, IFR, NORDO, Turbine/Warbird, Helicopter, Ultralight, and Seaplane arrivals to Oshkosh, and the Fond du Lac diversion procedure. It also itemizes the various arrival/departure procedures for Fond du Lac (FDL) and Appleton (ATW).
For a pilot’s eye view of the procedures, follow this link to the AirVenture Flight Procedures page of the EAA website. This page also links to the notice, NTSB Major Fly-in Tips, and FAA Graphic NOTAM/TFRs. For the latest skinny on this year’s procedures, mark your calendar for the EAA-hosted webinar on Flying to AirVenture, which starts at 7 pm Central Daylight Time on June 22. With proper planning, we all can contribute to what (we all hope) will be another banner pilgrimage to Oshkosh. See you there! — Scott Spangler, Editor