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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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PreFlight Camp Introduces Girls to Aviation Opportunities
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Meeting at U.S. Air Force survival school in 2007 and reflecting on the unexpected opportunities that introduced them to aviation, Liz Greene and Kristen Franke conceived an idea that became the nonprofit PreFlight Camp whose mission is to make girls 11 to 14 aware of aviation and its career opportunities.
“We’re past the point of receiving negative feedback. Gender representation is turning around in medicine, engineering,” said Franke. “It just lacks exposure, reaching out to half the population is what the aviation industry desperately needs. You can’t be what you can’t see!”
The founders didn’t know flying was an option because they’d never been exposed to it or had someone explain the opportunities to them. For Franke, it was an ROTC officer at the University of Missouri who urged her to take all the pilot tests.
“I just wanted a job. My grandfather was an Air Force pilot who flew heavy airplanes, but he died when I was 5, so he wasn’t an influence,” she said. “My grandmother took me to some air shows, but the thought of becoming a pilot never entered my head. When the recruiter encouraged me to take the pilot tests, I didn’t know about the 10-year commitment. Take the tests, he said, you can change your mind later. So, I did, and I owe him for encouraging me to try something I never considered. Nobody told me I couldn’t do it; it just never occurred to me.”
Greene’s story is similar, Franke said, and they bonded during their weeklong overlap at survival school and sustained their friendship over time and distance. Greene was a C-21 and KC-10 pilot stationed at Ramstein, Germany, and Franke was a C-17 pilot out of Charleston, South Carolina. “We went to Ramstein all the time.”
The founders left active duty in 2014 (Franke now flies the Airbus 221 for Delta and the C-17 for the Air Force Reserve and Greene flies for Hawaiian Airlines) and met in South America, where Greene was on a four-month travel journey. “I had some time off, too, so I flew to Colombia, went for a hike, and cruised from Cartagena to Panama on a chartered sailboat.”
It was during that trip that Greene delivered her “brain baby” that became the PreFlight Camp, said Franke. “I was just the enabler. “We didn’t know flying was an option for us initially, we fell into it, and we thought, in the spirit of the WASP legacy, sisterhood, and as role models, we could do better for the next generation.”
PreFlight Camp debuted in 2016 as a six-day, overnight camp held at Texas State University in San Marcos. The following year the founders participated in EAA AirVenture’s AeroInnovate business accelerator. As a 501c3, PreFlight Camp was the first nonprofit booth at EAA and received an Aeroinnovate grant.
The camp returned to Texas in 2018 and 2019. After the pandemic standdown in 2020, it adapted as a day camp at Colorado Skies Academy in Centennial, Colorado, and 12 campers and two junior counselors participated from July 26-31, said PreFlight’s president and board chair Morgan Mitchell. The camp counselors, recruited through social media and word of mouth, are (like the four-member board) all volunteers.
“Flexing to the day camp option instead of the overnight was great and we didn’t have any problems,” said Franke. “Colorado Skies Academy enabled us to hold almost all of our activities in the large cafeteria with garage doors. We kept the garage doors open whenever we were holding camp and the campers and volunteers were required to wear masks if they were unvaccinated.”
As it has at preceding camps, the week consists of lessons, hands-on activities, and introspective discussions in Aircraft Components, Aerodynamics, Weather, Weight and Balance, Communication, Navigation and Goal setting.
“We close each activity with an introspective question to help the girls think about what they are interested in. The four forces of flight is an example; related to life, what drags you down, what lifts you up, and how do you keep them in balance? Ultimately, PreFlight gives girls the courage and confidence to look around the corner, to do something different,” said Franke.
“We were also able to take all the campers on a tour of the Air Force Academy in Colorado Springs where they got to tour the airfield and campus, sit in a glider, use the simulators, and hear from some awesome female pilots that work there,” she added.
“At the end of camp, they all got a discovery flight with a female CFI provided by Aspen Aviation and learned how to preflight the plane. While they waited their turn for the discovery flight, they had the run of the Exploration of Flight Museum as well as the opportunity to check out 2 T-6’s that flew in from Randolph AFB, Texas. To cap it all off, Col Kim Campbell, (first female solo demo Thunderbird pilot, now retired) spoke to the girls during graduation,” Franke said.
“We liked the day camp format so much we’ll probably stick with it for the foreseeable future. We plan to hold camp in Colorado in 2022 as well as tentative plans to hold a second day camp in Texas.” And efforts to grow the organization continue as well, seeking funding to support multiple camps and pay staff. Ultimately, the people behind PreFlight Camp “focus on quality, not quantity,” said Franke.
Mentoring campers is an open-ended commitment. “The mother of an Indian girl who attended our inaugural camp called us and said her daughter, who wants to be an engineer, also wants to be an astronaut; what classes should she take in high school? We didn’t know, but we found someone who did.”
If you enjoyed this story, why not SUBSCRIBE to JetWhine, if you haven’t already, and please share it with anyone who might find it interesting. — Scott Spangler, Editor
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Promote Aviation With Inclusive Participation
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Over the decades, the Young Eagles program has given millions of youngsters what, in many cases, were their inaugural flights in an aircraft smaller than a transport category airliner. This includes my kids and my grandchildren, which gives you an idea of how long pilots have been participating in the program. Unfortunately, its desired outcome—inspiring youth to become members of the pilot community—has not achieved the desired or hoped for magnitude.
Certainly, there are many factors contributing to the anemic number of Young Eagles who act on their inaugural inspiration. One I had not considered came to mind after reading about a new program in Washington that introduces a diverse cohort of newcomers to hot air ballooning. Unlike a Young Eagles flight, a passive, one-and-done experience akin to a theme park ride, the balloon program encourages the aeronauts to become volunteer members of the team necessary for every flight of a hot air aerostat.
Similar opportunities exist with gliders or sailplanes. Unlike powered aircraft, where a single person, usually the pilot, can prepare them for flight, gliders and balloons cannot fly without the contribution of others. Besides the pilot, gliders need at least two other people to take flight, someone to connect the tow rope and run with the wingtip in hand until the ailerons take effect, and another person to pull the tow rope, such as the tow-plane pilot or tow winch operator.
There are many more opportunities for hands-on participation on a balloon crew, which is always supervised by the pilot. A single person cannot wrestle the basket and propane fuel bottles in position. Nor can the pilot spread out the envelope, set up the fan to start inflating it, and operate the basket’s burners to heat that air, and then run to the top of the envelope to hold the rope that keeps the balloon from lifting off or drifting in the breeze. It takes a team, a group of individuals whose effort is repaid, over time, with a ride and, often, hands-on piloting experience.
Unlike gliders, aerostats go where the wind takes them, so the launch team is also the recovery team. Someone needs to drive the truck and trailer or van, someone else communicates with the pilot via radio, while others maintain visual contact with the balloon and do their best to translate its windborne flight to terrestrial roads and pathways. It really is an exciting challenge that encourages critical thought and problem solving. And it promotes appreciation of the efforts of every member of the team because they experience it from their own and the pilot’s airborne point of view.
Over the past four decades I have not yet encountered a balloonist or glider club that did not welcome visitors with open arms and invite them to join in the fun as a volunteer member of the team. And the situation is right, there’s often a ride upfront to set the hook. As participants in every aspect of the flight, from preflight briefing (and balloonists get into the nitty gritty in their weather briefings), it redefines ground school. If there is a downside, it is that the aeronauts often arise well before the sun to drift into the new day. But it has always been worth setting the alarm clock for the opportunity. The challenge is for powered aircraft pilots to create similar hands-on opportunities that encourage inclusive participation in the joy of flight.
If you enjoyed this story, why not SUBSCRIBE to JetWhine, if you haven’t already, and please share it with anyone who might find it interesting. — Scott Spangler, Editor