-
Making the Brazilian ATR-72 Spin
by
[sc name=”post_comments” ][/sc]
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…)
-
How the FAA Let Remote Tower Technology Slip Right Through Its Fingers
by
[sc name=”post_comments” ][/sc]
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…)
-
Getting Reacquainted With NASA Callback
by
[sc name=”post_comments” ][/sc]
Cleaning out an old flight bag, in a long unvisited pocket I found a NASA form that must be more than a decade old. I was flying more than I do now, and I always carried the form in case I needed to submit the details of some inadvertent stupid pilot trick to the Aviation Safety Reporting System. If I did this in a timely manner, in most cases, it cut off an FAA enforcement action at the pass, if I submitted the form to NASA in a timely manner.
Fortunately, I never needed the form. Finding this relic, however, reminded me that it’s awhile since I’ve heard about the ASRS and seen its magazine, Callback. It was a good program, and the publication was an excellent way to learn from the mistakes of others. In the clutter of life its absence didn’t catch my attention, but the memory of its benefit motivated me to get reacquainted, if the program still existed.
It took less than a minute to find the Aviation Safety Reporting System website, and I’m happy to see that it is still around. The information pilots volunteer in the interest of safety still cannot be used as part of an FAA enforcement action, and pilots can now securely and anonymously submit it online. More important, Callback still exists as an electronic publication, and you can search an online database. Score another one for the Internet!
In addition to the database, the good folks at ASRA have posted database report sets that address 24 different topics, including Air Carrier (FAR 121) Flight Crew Fatigue Reports, Bird or Animal Strike Reports, General Aviation Flight Training Reports, Passenger Electronic Devices, and Runway Incursions. If you’re not aware of ASRS, the program’s website offers a concise briefing, and I’d suggest that you check it out. And the same goes if you’re like me and let its good work get away.
Now, if you’ll excuse me, I need to sign up for the monthly ASRS e-newsletter, and I have some reading to catch up on. — Scott Spangler
-
LSA Surpasses Expectations at Oshkosh FBO
by
[sc name=”post_comments” ][/sc]
In no uncertain terms, Toby Kamark and Jeff Gentz see light-sport aircraft as the future of general aviation. It’s time for a new generation to succeed the old, and this change is happening now, they said. Sport pilot is the key to getting people into the air and making them pilots, Jeff said, adding that his wife is one of them. “You have to invest in sport pilot, or it’s not going to succeed,” Toby added.
They have done more than talk. Toby owns Orion Flight Services, with two Wisconsin locations, in Oshkosh and Door County. Jeff grew up at OSH, married Toby’s niece, and is a MD-11 pilot. Last year they formed Orion Sport Aircraft LLC. A Remos dealer, a G3-600 joined the FBO’s rental fleet last October, followed by the new GX earlier this year. A 172N and a Cirrus SR20 complete Orion’s rental fleet at OSH.
“I’m beside myself at how well they are doing,” Toby said, “much better than I expected.” Since joining the rental fleet the Remos light-sport aircraft have been averaging 80 hours a month, not bad considering that the G3 started logging rental hours just before a Wisconsin winter.
Despite the economy, Orion Sport Aircraft has sold 11 aircraft since January. With its performance, good useful load, wide cabin, and glass cockpit (two big-screen Dynon units and a Garmin stack of two nav/coms, audio panel, transponder, and panel-mounted GPS 496 with XM weather), “the Remos sells itself,” Toby exclaimed, “even at $140,000 a pop.” It’s also attracted a lot of new students. About a half dozen have already earned their sport pilot certificates and another dozen or so are now working toward their sport pilot tickets with Orion’s five CFIs.
-
Southwest Airlines: In a Category of Its Own
by
[sc name=”post_comments” ][/sc]
In Jetwhine’s first official podcast add-on to the post below, editor Rob Mark takes a close look at what makes Southwest Airlines so successful.