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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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FAA Finally Delivers NextGen Fuel-Efficient OPD Approaches
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To reduce aircraft fuel consumption and reduce the aviation’s contribution to the CO2 saturated atmosphere, the FAA implemented 42 new Optimized Profile Descents that allow planes to make a low-power continuous descent from cruising altitude at the nation’s largest airports.
Compared to the traditional and typical stair-step or step-down descent from cruising altitude, the benefits are easily conveyed and understood. Coasting at idle uses less gas than adding power to level off at each lower altitude on the way to the airport.
In its announcement, the FAA estimates that for each group of descents used at an airport, aircraft will save an average of 2 million gallons of Jet-A and eliminate 40 million pounds of emissions by 2050. “That is equivalent to eliminating the fuel and emissions of 1,300 Boeing 737 flights from Atlanta to Dallas.”
Dallas-Fort Worth got its OPD in 2021, along with Fort Lauderdale-Hollywood International, Orlando International, Reid International and North Las Vegas, Port Columbus International, New Jersey’s Lakehurst Maxfield, Portland International, and other mid-sized airports. And the FAA will more OPD procedures in 2022.
These efficient procedures are, without argument, a good thing for everyone on the planet, but despite contrary to the announcement’s inference, Optimized Profile Descents are nothing new. As the agency noted in its announcement, the FAA has been developing OPD procedures since 2014, establishing them “in Atlanta, Charlotte, Cleveland, Denver, Detroit, Houston, Northern California, and Washington, D.C.”
And old timers might remember that OPDs, originally called continuous descent approaches, were one of the primary selling points when the FAA introduced its Next Generation Transportation System (NextGen) effort in, what was it, 2008?
All things considered, looking at all the necessary building blocks, all the operational aircraft and ATC equipment and procedures, including Performance Based Navigation, ADS-B, and the unseen infrastructure (like WAAS, for example) that make NextGen work, the introduction of OPDs could still be on the FAA’s to-do list.
Where OPDs stood on the FAA’s initial NextGen timeline really isn’t important now. What matters is that the FAA is carrying through on its NextGen promises for the benefit of all who travel through the air as well as all of us who breathe it.
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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FAA Commercial Astronaut Wings Q & A
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With 2022 stranded at airports across the land thanks to the cancelation of thousands of flights, let’s pass the time with a game of FAA Commercial Astronaut Questions and Answers. Let’s start with the obvious:
Did you know there was a list of FAA Commercial Human Spaceflight Recognition?
How does one make this list and how many people does it name?
The 30 people on this list have received FAA Commercial Astronaut Wings. Although the FAA did not provide “guidelines, eligibility, and criteria for the administration” of this program until July 20, 2021, it was authorized by the Commercial Space Launch Act of 1984.
This “Act also directs the FAA to encourage, facilitate, and promote commercial space launches and reentries by the private sector, including those involving spaceflight participants.”
To earn these wings, recipients must meet the flight crew qualification and training requirements of 14CFR Part 460, be a crewmember on an FAA/AST authorized flight that rises more than 50 miles above the Earth’s surface, and “demonstrated activities during flight that were essential to public safety, or contributed to space flight safety.”
Who is first on the list?
That would be Mike Melvill, who piloted the first flight of SpaceShipOne at the Mojave Air & Space Port on June 21, 2004. Next is Brian Binnie, who flew SS1 on October 4, 2004, followed by Michael Asbury and then Peter Siebold in SpaceShipTwo a decade later, October 31, 2014.
Who is last to get their wings?
They would be the passengers on the December 11, 2021 flight of Blue Origin’s New Shepard flight from Texas’s Launch Site One: Laura Shepard Churchley (daughter of America’s first astronaut, Alan Shepard); Michael Strahan, Evan Dick, Dylan Taylor, Cameron Bess, and Lane Bess.
Who is next?
To get their Commercial Astronaut Wings from the FAA? No one. The passenger on December’s Blue Origin flight, were the last. “With the advent of commercial space tourism era, starting in 2022, the FAA will now recognize individuals who reach space on its website instead of issuing Commercial Space Astronaut Wings,” said the agency’s December 10, 2021 media release.
“Any individual who is on an FAA-licensed or permitted launch and reaches 50 statute miles above the surface of the earth will be listed on the site.” There was no mention of passengers meeting the requirements of Part 460, but after reading them, logic suggests that they remain in effect.
What’s missing is the Astronaut Wings Program requirements to demonstrate “activities during flight that were essential to public safety, or contributed to space flight safety.” It would be interesting to hear how weightless tumbling and catching wayward Skittles by mouth meet those requirements, so maybe that is why the FAA concluded its wings program.
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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Open Cockpits, Stepping into History at the Air Zoo
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Admiring historic airplanes from a museum floor is a big-picture perspective of their contributions, whatever they may be, to aviation. Regardless the aeronautical era or the scope of the story, the viewer’s mind readily puts the winged artifact before you into some cinematic environment. The only way to truly gain the perspective of the individuals who gave any airplane life is to look out from the inside. Gaining access to cabins and cockpits is easier in larger aircraft, and if you can afford it, a number of organizations complete the connection with a living history flight. Such access to single-seat aircraft is essentially nonexistent, unless you’re in Kalamazoo, Michigan, for the annual Open Cockpit event at the Air Zoo Aerospace & Science Experience.
Traditionally held every weekend in February (and occasionally one weekend into March) since its inauguration in 2013, COVID-19 moved it to every weekend in September 2021, said Troy Thrash, president and CEO. Whether the 2022 event returns to February or repeats in September depends on the virus’s raging mutations, he said, and the Air Zoo’s website and Facebook page will provide plenty of advance notice. Open Cockpit is free with the museum’s paid admission, and there are few restrictions: To protect these historic artifacts, cockpit climbers can weigh no more than 250 pounds. “Visitors must also have the ability to enter and exit the aircraft unassisted. Children wishing to sit in the aircraft must be supervised by their parents/guardians.”
Settling into the seat of the FM-2 Wildcat, the first surprise was that I fit (and sticking to the calorie-counting diet I started a decade ago that trimmed 50 pounds from my 6-foot-5 frame was again rewarded). Carefully taking the controls and looking straight ahead my memory replayed one of the only stories my father shared with me of his experiences as a World War II naval aviator. With a 180-degree turn from downwind to final to the USS Wolverine as it paddled its way into the Lake Michigan wind, “the flight deck disappeared beneath the cowl, the last thing you saw was the landing signal officer giving you the cut, and from there you hoped to hit hard and stop.” Until taking this seat, I couldn’t conceive this image, now it all made sense, and it bonded a new layer of respect for him and his understated accomplishments when he was just 20.
Each year the Air Zoo decides which cockpits to open, said Thrash, “mixing and matching them each year so we our guests can enjoy their favorites and we can introduce them to some new aircraft,” such as the Ryan PT-22, Grumman Mallard seaplane, and P-39. Some, like the FM-2 Wildcat and F6F Hellcat, and FG-1D Corsair are in rotation with the airplanes people look forward do each year such as the Ford Trimotor, B-25 Mitchell, and P-47 Thunderbolt. Some cockpits, including the SBD Dauntless, Mig-15, and SR-71B, are open only for viewing, because they are on loan from their respective military museums.
Each open cockpit is overseen by a team composed of Air Zoo staffers and volunteers. The person at the head of the line (and there’s always a line, Trash said) talks about the airplane’s history and specifications, and another one or two at or near the cockpit to guide people safely in and out, where to put their hands and feet, and to make sure people don’t fiddle with levers and switches. “We don’t worry about that too much, because people, even the kids, are remarkably respectful of the airplanes,” Thrash said. “The understand they are climbing into history and they treat the opportunity with reverence.”
When COVID moved Open Cockpits to September, the Air Zoo filled the space with a new event, Panels Off. “Our restoration team removes panels and cowlings from aircraft throughout the museum, so people can see under their skin,” said Thrash, “see what makes them go and understand how they are put together.” One of the most revealing is the T-6 Texan, which is welded steel tube fuselage that’s covered with removeable aluminum sheet metal skins.
The inaugural Panels Off was well received in February 2021, Thrash said, and it will return next year, either in February or September, opposite of the annual Open Cockpits event. “Stay turned to the Air Zoo’s website and Facebook page for scheduling.”
Happy New Year!
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