-
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…)
-
Alternate States: For & Against Their Airports
by
[sc name=”post_comments” ][/sc]
The politician is an amazing form of life, a shining example that the only reliable human constant is inconsistency–especially when it comes to aviation, specifically smaller airplanes and their airports. Some, like those from Nebraska, get it, and others, like those in Ohio, do not (or they’ve never taken the time to learn).
In Ohio’s general revenue budget the House gave small airports (like Dayton’s Wright Brothers Airport) $1.2 million a year for improvements and inspections. The Senate cut these funds to help make up a roughly billion dollar shortfall. The Springfield News-Sun article didn’t say what else the Senate would cut to make up the remaining $997.6 million. The senate did leave a few bucks in the rail and transit budget, and the Ohio DOT is going to see if it can transfer some of that to the airports.
Measured by a story in Sidney Sun Telegraph, Nebraska Senator Ben Nelson gets it. He just introduced the Small Airport Relief Act of 2009. If passed, it would ensure current federal funding levels for rural airports to help them remain stable during the economic downturn. As quoted in the article:
“Rural airports are an economic engine for the communities they serve,” said Sen. Nelson. “This legislation will keep Nebraska’s rural airports upgraded, modern and safe. Rural airports are counting on these funds. These tough times are, hopefully, temporary and rural airports shouldn’t be penalized by losing funds they need for runway work, security upgrades or other improvements to remain modern and up-to-date.” (more…)
-
Lessons From the Crash of Air France 447
by
[sc name=”post_comments” ][/sc]
Having just traveled to Paris on an Air France A330 a week before the crash of Flight 447, I took a rather personal interest in the crisis wondering whether it might have been the same aircraft I’d flown on the week before for starters and a host of other things. But the crash was obviously about much more than me. I didn’t lose anyone in the horrible event of June 1.
With a few notable exceptions, Continental and Southwest, I’m not normally very patient with airlines about how they interact with customers because they usually do such a lousy job of it. That’s why I found this analysis from SimpliFlying’s Shashank Nigam so interesting and worthy of a cross-post. Air France did quite a bit right after the crash as you’ll read here. He asks and answers the question, how can an airline brand survive a disaster? This piece first appeared a few weeks ago on the SimpliFlying blog.
Rob Mark
*****************************
As many of you have probably heard on the news, Air France Flight 447, an Airbus A330-203 (A332), disappeared a couple of nights ago, flying to Paris (CDG) after departing Rio Di Janeiro (GIG). It’s the first fatal crash of the A330 since 1992, when the plane went into service. Right now as Air France, the Brazilian military and Airbus work to find out the minimize the public relations damage that is caused by any crash, especially an unexplainable lost aircraft, there are lots of lessons to be learnt in how a leading airline brand should deal with disaster.
What did Air France do well in the aftermath of the crash?
Though there are lots of people affected in the aftermath of an airplane crash, from the plane manufacturer to the air traffic controllers, priority must be given to the relatives of those lost in the accident. Air France as done a pretty decent job of this, despite not knowing where the plane was and the cause of the crash.
- Up-to date information was provided directly to the relatives, through dedicated phone lines, in French, Portuguese and through international numbers. The media were advised not to call this number.
- AirFrance.com was changed to a graphic-less look to mourn for the crash, and instead of seeing a normal booking engine, visitors saw links to getting more information about the crash.
-
Counting Sporty’s Aviation Offspring
by
[sc name=”post_comments” ][/sc]
Catching up on my reading, the annual report of the Sporty’s Foundation had worked its way to the top of the pile. As I was flipping through the pages I was not really thinking about the good works presented in words and pictures. I was thinking about Jay Leno’s last night as host of the Tonight Show, when he joined the 68 children born to staff members during his 17-year tenure, his “legacy,” he said. Would there be a stage big enough, I wondered, to gather Hal Shever’s legacy? Maybe Aero Shell Square at EAA AirVenture Oshkosh?
Sporty’s 501(c)(3) foundation is entering its third year, but Hal, its chairman and founder, has been giving back to aviation for more than four decades through the corporate philanthropy of Sporty’s Pilot Shop. More than an astute businessman, he is an indefatigable teacher of flight whose eye is always looking to the future. “If there is no freshman class,” he’s told me more than once over the years, “in four years there will be no graduates.”
Multiply the foundation’s work over the past year–awarding $151,355 to the aviation related activities of a diverse group that ranges from the Aircraft Electronics Association and AOPA Air Safety Foundation to the Boy Scouts of America and EAA Chapter 838–by four decades and many more groups and activities, and that’s a pretty good crowd right there. Then think about the possibilities of the Foundation new partnership with the EAA Young Eagles to create The Next Step, an effort designed to jumpstart the number of young people who learn to fly.
But that’s only part of the Sporty’s freshman classes. The rest of them, college students and recent graduates work for Sporty’s Pilot Shop and any number of Hal’s other aviation endeavors in flight training, maintenance, and avionics. It would be interesting to gather this group that launched its collective career at Hal’s Batavia, Ohio, headquarters separately, tally the number and variety of aviation-related firms they now work for, and ask them a single question: What is your most memorable experience from the hot dog feast that Sporty’s holds–rain or shine–every Saturday at the Clermont County/Sporty’s Airport (I69)? — Scott Spangler