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The sun is about to enter a peak activity period, letting off space weather-causing solar flares. These solar flares aren't dangerous but have caused sporadic radio blackouts on Earth. A few powerful solar flares have already sent space weather towards our planet in recent months. NOAA/InsiderHere's what this looks like:In the time-lapse video, solar flares appear as an intense brightening of a region on the sun. How solar flares can lead to radio blackoutsDuring certain space weather events, such as solar flares, solar energetic particles travel down geomagnetic field lines in the polar regions.
Persons: , Mathew Owens, We're, aren't Organizations: Service, NOAA, NASA, University of Reading, Federal Aviation Administration, Riverton Locations: Riverton , Utah, New Mexico, Belgium
Endeavor had canceled about 12 percent of its flights, while JetBlue had canceled about 9 percent and Republic canceled about 8 percent. United and JetBlue attributed to the problems to the weather, but also to the F.A.A. frankly failed us this weekend.” JetBlue said in a statement that it had struggled to keep up with its flight schedule after air traffic control limited trips for all airlines into and out of New York airports. said it had no air traffic control staffing issues along the East Coast on Monday or Tuesday. In a report published last week, the Transportation Department found that most of the 26 critical air traffic control facilities it identified were understaffed by 15 percent or more, as of March 2022.
Persons: Scott Kirby, Organizations: Newark Liberty International Airport, Endeavor, JetBlue, Republic, United, ” JetBlue, Transportation Department, New York Locations: United, New York, What’s, East, New
[1/2] FILE PHOTO-General view of the Ryanair logo at their headquarters in Dublin, Ireland, September 16, 2021. "We want to focus very much on this region," Alicja Wojcik-Golebiowska, the CEE and Baltics country manager for Ryanair told Reuters in an interview. "We see that central and eastern Europe was a little bit left behind in last years. Hungarian budget airline Wizz Air will be its main competitor as it offers similar cheap fares, as well as connections to the Middle East. She said the company was also aiming for a dominant position in countries like Romania, Bulgaria and Hungary.
Persons: Golebiowska, Alan Charlish, Joanna Plucinska, Mark Potter Organizations: Ryanair, REUTERS, Wizz Air, Europe's, Boeing, Reuters, Wizz, Irish, Airlines, Thomson Locations: Dublin, Ireland, WARSAW, Europe, Poland, Spain, Italy, Romania, Bulgaria, Hungary, Warsaw, London
United Airlines was once again faring the worst of the American domestic airlines. Republic Airways, which operates short-haul flights for American Airlines, Delta and United, had 17% of its schedule canceled (153 flights) but few delays. More than 40 million people in the Northeast and Central Plains are at risk of severe storms on Tuesday. United CEO blames FAA staffing for “unprecedented” weekend delaysTuesday’s travel troubles are the fourth day in the row of delays and cancellations. The airline canceled 461 flights this past Saturday and Sunday and delayed another 1,972 flights, according to data from flight tracking site FlightAware.
Persons: that’s, John F, Kennedy, Boston’s Logan, , , Scott Kirby, Kirby, ” Kirby, Department of Transportation “, it’s Organizations: New, New York CNN, United Airlines, Republic Airways, American Airlines, Jersey’s Newark Liberty, Storm Prediction, United, Federal Aviation Administration, CNN, FAA, Newark Liberty International Airport, Department of Transportation Locations: New York, United States, Delta, United, LaGuardia, Northeast, Central Plains, Philadelphia, Washington, DC, Kansas, Oklahoma, Wichita, Tulsa, New York , Delaware, Pennsylvania
Flight disruptions mounted Tuesday as severe storms and staffing issues kicked off a rocky start to summer. Some airline executives have also blamed some of the disruptions on shortages of air traffic controllers. "And that put everyone behind the eight ball when weather actually did hit on Sunday and was further compounded by FAA staffing shortages Sunday evening." The Covid-19 pandemic derailed hiring and training of new air traffic controllers, and the agency is now trying to catch up. The Department of Transportation's Office of Inspector General said in a report last week that air traffic control staffing shortfalls put air traffic operations at risk.
Persons: Biden, Scott Kirby, Kirby, General, Don Uselmann Organizations: Newark Liberty International Airport, Transportation Security Administration, United Airlines, FAA, Newark Liberty International, CNBC, Transportation's, reassignments, The Association of Flight, CWA, Union, JetBlue Airways, JetBlue Locations: New Jersey, United States, U.S, New York
ET, the FAA issued ground stops for Baltimore/Washington International Thurgood Marshall Airport, Ronald Reagan Washington National Airport and Dulles International Airport, preventing aircraft from taking off for those destinations. "Departures to D.C.-area airports have resumed and repairs to the communications power panel are complete," the FAA said in a statement. More than 440 flights to and from Newark Liberty International Airport were delayed. The airport is a major hub of United Airlines , which had more than 840 delayed flights Sunday, according to FlightAware. American Airlines posted 938 delayed flights, 27% of its mainline schedule, Delta Air Lines had 716, or 20% of its schedule, and New York-based JetBlue Airways had 472 delays, or 45% of its planned schedule.
Persons: Ronald Reagan Organizations: Boeing, Ronald Reagan Washington National Airport, Federal Aviation Administration, Washington D.C, FAA, Baltimore, Washington International Thurgood Marshall Airport, Dulles International, Washington Dulles, Newark Liberty International Airport, United Airlines, American Airlines, Delta Air Lines, JetBlue Airways Locations: Ronald Reagan Washington, Arlington , Virginia, Canada, U.S, Washington, Miami, Boston, Detroit, United, New York
CNN —As millions of Americans are expected to pack commercial flights over the July 4th holiday, the union representing the Federal Aviation Administration’s air traffic controllers says a recent government watchdog report is proof the agency and Congress must fix a “flawed staffing model.”“The status quo is no longer sustainable,” said Rich Santa, head of the National Air Traffic Controllers Association. The union says that Congress must “require FAA to immediately implement” new staffing standards and “conduct maximum hiring.”“There are currently 1,200 fewer fully certified controllers today compared to ten years ago,” said Santa. “FAA’s flawed staffing model and inconsistent hiring has resulted in new hires not keeping pace with attrition over the past decade.”Previous CNN reporting found that staffing issues at one key air traffic control facility in Florida triggered thousands of delayed flights over a seven-week period last summer and revealed a complaint that workers were pressured to work overtime to provide coverage. The union of controllers says the FAA should make changes “without the need for congressional intervention and Congress should not require further study of the issue.”The FAA says it has “completed a comprehensive review of the distribution of controllers” and that it is using a new system to track ATC work assignments. The agency is calling on Congress to fund hiring 1,800 controllers next year in addition to the 1,500 the agency is funded to hire this year.
Persons: , Rich Santa, Organizations: CNN, Federal Aviation, National Air Traffic Controllers Association, FAA, Department of Transportation’s Locations: Florida
WASHINGTON, June 23 (Reuters) - Critical U.S. air traffic control (ATC) facilities face staffing challenges and the Federal Aviation Administration "lacks a plan to address them," a government audit released on Friday found. The Transportation Department Office of Inspector General said the staffing issues pose risks to the continuity of air traffic operations. The report said the FAA has made limited efforts to ensure adequate controller staffing at the busiest air traffic control facilities, adding that 77% of critical ATC facilities are staffed below the FAA's 85% threshold. The center in busy Florida has had 300 staffing triggers - events when workforce issues require reducing air traffic, the report said. The Transportation Department in May sought $117 million to hire 1,800 air traffic controllers next year, in addition to 1,500 being hired this year.
Persons: General, York TRACON, David Shepardson, Chizu Nomiyama, Matthew Lewis Organizations: Federal Aviation Administration, Transportation Department, FAA, National, Jacksonville, The Transportation Department, Delta Air Lines, United Airlines, Washington National, New, ., Thomson Locations: U.S, Florida, New York JFK, LaGuardia, Newark, New York, York, Miami, Washington
WASHINGTON, June 23 (Reuters) - Critical U.S. air traffic control (ATC) facilities face staffing challenges and the Federal Aviation Administration "lacks a plan to address them," a government audit released on Friday found. The Transportation Department Office of Inspector General said the staffing issues pose risks to the continuity of air traffic operations. The report said the FAA has made limited efforts to ensure adequate controller staffing at the busiest air traffic control facilities, adding that 77% of critical ATC facilities are staffed below the FAA's 85% threshold. The center in busy Florida has had 300 staffing triggers - events when workforce issues require reducing air traffic, the report said. The Transportation Department in May sought $117 million to hire 1,800 air traffic controllers next year, in addition to 1,500 being hired this year.
Persons: General, York TRACON, David Shepardson, Chizu Nomiyama, Matthew Lewis Organizations: Federal Aviation Administration, Transportation Department, FAA, National, Jacksonville, The Transportation Department, Delta Air Lines, United Airlines, Washington National, New, ., Thomson Locations: U.S, Florida, New York JFK, LaGuardia, Newark, New York, York, Miami, Washington
CNBC's Jim Cramer on Wednesday told investors he thinks Wall Street is not paying close enough attention to RTX , an aerospace and defense company. RTX is a re-branded version of the original Raytheon Technologies with a robust aerospace sector thanks to a merger with United Technologies. "I think you're getting another chance to buy RTX into unjustified weakness here," Cramer said. Hayes continued, saying that because of the war, RTX is already receiving multi-billion dollar restock orders. With the war between Ukraine and Russia continuing to drag on, Cramer concurred with Hayes and said RTX is "locking in major business for years to come."
Persons: CNBC's Jim Cramer, — Cramer, RTX, Cramer, Greg Hayes, Phil LeBeau, Hayes, it's Organizations: Wednesday, Raytheon Technologies, United Technologies, Paris Air, NATO Locations: Ukraine, Russia
The US Air Force has begun retiring the A-10, an aircraft famed for its role in close air support. Indeed, the US Air Force is finally retiring the aging A-10 Warthog ground-attack aircraft, which a top official has said "doesn't scare" China. According to Pentagon's budget request for 2024, the Air Force is looking to cut its TACP force by more than 40% over the next three years. If the plan goes ahead, the Air Force TACP community will have a little over 2,100 positions for officers, enlisted troops, and civilian personnel in 2025, down from the 3,700 slots it has currently, a spokesman told Air Force Times. "I think the military is getting ready for a war where we won't have air dominance," a former Air Force Combat Controller told Insider.
Persons: , Tyler, Mercedee Wilds, Ryan Conroy, Michael Holzworth, Col, Nathan Colunga, Colunga, Stavros Atlamazoglou Organizations: US Air Force, Tactical Air Control Party, Service, China, US Air National Guard, Staff, Tyler Woodward Tactical Air Control Party, US Army, Marine Corps, Air Force, Air Force Times, Air, National Guard, Air Combat Command, Air Force Combat, Combat, Air Commando, 321st Special Tactics Squadron, Navy, Army Green Berets, Marine Raiders, Air Force Special Operations Command, Air Force Special, Squadron, Tech, Warfare, Hellenic Army, 575th Marine Battalion, Army, Johns Hopkins University, Johns Hopkins, School, International Locations: China, Estonian, Kansas, Fort Irwin, California, Ukraine, Afghanistan, Iraq, Estonia, Nevada, Johns
PARIS, June 18 (Reuters) - U.S. planemaker Boeing (BA.N) slightly raised its annual 20-year forecast for new jetliner deliveries, propelled by the strength of the narrowbody market fueled by demand from low-cost carriers. Boeing expects airlines will need to buy 42,595 jets from now until 2042, up from 41,170 planes in its previous 20-year forecast last year. Boeing expects that narrowbody jets like its 737 MAX or the A320neo family made by European rival Airbus (AIR.PA) will dominate aircraft deliveries, with 32,420 single-aisle jets delivered through 2042. Deliveries from now until 2042 are also expected to include 7,440 widebody planes, 1,810 regional jets and 925 freighters. The company also raised its industrywide passenger traffic forecast growth rate slightly from 3.8% to 4%.
Persons: Darren Hulst, Hulst, we'll, it's, Valerie Insinna, Jonathan Oatis Organizations: planemaker Boeing, Boeing, Paris, Airbus, Thomson Locations: Boeing's, China, Asia
This idea of point-to-point rocket travel, however, could be uncomfortable and inconvenient. Space companies that are exploring the technologyWhile no one is going from Down Under to Big Ben in less than 24 hours these days, some space companies are already testing the technology needed for point-to-point rocket travel. No company has announced projected ticket prices for point-to-point rocket trips, but if other space travel is any indication they'll likely be super expensive. Currently, you can book a two-hour space flight with Virgin Galactic for $450,000. But he's not planning any future point-to-point rocket flights because it's not worth the hassle.
Persons: , David Doughty, Admiral Jet, Doughty, Big Ben, Richard Branson, Elon Musk, Jeff Bezos, Joe Cassady, there's, Thompson, Cassady, It's, he's Organizations: SpaceX, Service, Qantas, Rockets, Passengers, Virgin Galactic, Rocket, astronautics, US Air Force, NASA, Astronauts, Travelers Locations: London, Sydney, New York, Boca Chica , Texas, Mexico
Severe clear-air turbulence has increased by 55% since 1979, moderate by 37%, and light by 17%. Clear-air turbulence is invisible and hard to forecast and it is predicted to double by 2050. According to a new study by the Department of Meteorology at the University of Reading, UK, the occurrence of severe clear-air turbulence has increased by 55% in the past 40 years, while moderate turbulence has increased by 37%, and light by 17%. Clear-air turbulence is not the kind you experience going through a storm. As wind shear gets worse, so does clear-air turbulence, with some weather researchers predicting it will double by 2050, with severe turbulence increasing the most.
Persons: It's Organizations: Department, Meteorology, University of Reading, FAA, It's, National Center for Atmospheric Research
Air India, which is revamping itself under new owner Tata Group, has been rapidly growing its international presence with new non-stop flights to Europe and the United States. Being able to use Russian airspace has come as a boon as it looks to capture a bigger share of the market. IATA Director General Willie Walsh called for an opening up of Russian airspace. "What we would like to see is everybody using Russian airspace. But airlines that can are unlikely to stop using Russian airspace after this diversion, said James Halstead, managing partner at Aviation Strategy.
Persons: Stringer, Campbell Wilson, Wilson, Scott Kirby, Kirby, Willie Walsh, Walsh, James Halstead, Vinod Kannan, India's, it's, Air India's Wilson, I'm, Aditi Shah, Mark Potter Organizations: REUTERS, United Airlines, Air, Air India, International Air Transport, Tata Group, Reuters, Airlines, Aviation, Singapore Airlines, Thomson Locations: Sheremetyevo, Russia, Ukraine, Moscow, Stringer ISTANBUL, U.S, India, Europe, Asia, Brussels, Air India, Istanbul, Air, United States, Russia's Far
CNN —The recovery of wreckage from a private plane that crashed Sunday in Virginia, killing all four people onboard, after its pilot became unresponsive is expected to begin Tuesday. The unresponsive aircraft prompted the deployment of six fighter jets as it flew near Washington, DC, officials said. Six F-16s were launched from three bases and raced to intercept the private plane, White House National Security Council Coordinator for Strategic Communications John Kirby said Monday. Investigators are now examining the private plane’s autopilot function in the Virginia crash, a source familiar with the investigation said. Correction: An earlier version of this story gave the wrong source for information about the course taken by the private plane.
Persons: there’s, ” Adam Gerhardt, Gerhardt, John Rumpel, Barbara, Adina Azarian, Aria Azarian, Adina Azarian's, Facebook Rumpel, Rumpel, Jeff Hefner, Strategic Communications John Kirby, Randall K, Payne Stewart, Stewart, , Keller Williams, Lakhinder, Azarian, ” “ Adina, ” Keller Williams, Dan Newlin Hefner, Hefner, , Dan Newlin, ” Hefner, Newlin Organizations: CNN, National Transportation Safety, Cessna, NTSB, Encore Motors, Washington Post, FAA, MacArthur, NORAD, National Security, Strategic Communications, Authorities, Washington, Southwest Airlines, Network, Continental, American Aerospace Defense Command, US Capitol Police Locations: Virginia, Washington, DC, Waynesboro , Virginia, Delaware, East Hampton , New York, Tennessee, Elizabethton , Tennessee, Aberdeen , South Dakota, Florida, Texas, NYC, ” Keller Williams ’, York, Continental US
Supply chain issues will impact air travel in 2023, IATA director general says. Juliette Michel | Afp | Getty ImagesAir travel will be affected by "very frustrating" supply chain issues this year, according to Willie Walsh, director general of the International Air Transport Association, as he discussed the challenges facing the aviation sector this year. And we're already seeing that," Walsh told CNBC's Dan Murphy. A scarcity of air traffic control staff is also likely to be a problem in 2023, Walsh said. "The challenges we expect to see in the short term are outside of our control, and they principally relate to shortages, in resources in air traffic control," Walsh said.
Persons: Juliette Michel, Willie Walsh, Walsh, CNBC's Dan Murphy, We've Organizations: Afp, Getty, Air, International Air Transport Association, Boeing, Airbus Locations: U.S, United States, Europe
[1/2] An Air France aircraft, operated with sustainable aviation fuel (SAF) produced by TotalEnergies, is refueled before its first flight from Nice to Paris at Nice airport, France, October 1, 2021. REUTERS/Eric Gaillard/File PhotoISTANBUL, June 5 (Reuters) - Airlines took aim at Europe over green fuel mandates and its failures to stem France's air traffic control strikes as they weigh on carrier capacities at a global airlines meeting in Istanbul on Monday. In 2021, the body released its strategy to achieve net-zero carbon emissions by 2050, including a progressive increase in sustainable aviation fuel use. A global approach to book and claim for SAF credits will help facilitate economies of scale in SAF production," he said. FRAGMENTATIONHowever, IATA said the EU's approach could cause more fragmentation by forcing airlines to buy SAF in Europe, ultimately hampering a harmonized global approach and sowing confusion.
Persons: Eric Gaillard, Willie Walsh, Walsh, Marie Owen Thomsen, Joanna Plucinska, David Evans Organizations: Air France, REUTERS, Airlines, EU, SAF, Air Transport Association, Officials, Chicago Convention, Activists, Thomson Locations: Nice, France, ISTANBUL, Europe, Istanbul, United States, COVID
Airlines say ready to avoid repeat of summer travel chaos
  + stars: | 2023-06-04 | by ( ) www.reuters.com   time to read: +2 min
Airline leaders attending IATA's annual meeting in Istanbul this week remain concerned about air traffic control disruption in Europe and the United States, however. "But as far as they are concerned, they have fulfilled their obligation to get their resources in place for this summer. Rising numbers of disputes between travellers and airlines globally have led to calls for passenger compensation. Some passenger groups have accused airlines of skirting compensation by invoking an exemption for exceptional circumstances. Airlines have reported strong bookings for this summer as air traffic returns towards pre-COVID levels.
Persons: Willie Walsh, they've, Walsh, Eurocontrol, Tim Hepher, Joanna Plucinska, Aditi Shah, David Holmes Organizations: Airlines, International Air Transport Association, Sunday, Airline, Reuters, European, Thomson Locations: ISTANBUL, Istanbul, Europe, United States, North America, Canada, U.S, European Union, Ukraine
WASHINGTON, June 4 (Reuters) - Deputy U.S. Transportation Secretary Polly Trottenberg is expected to be named Federal Aviation Administration's (FAA) next interim leader, two sources told Reuters on Sunday. Acting FAA administrator Billy Nolen is expected to leave the agency on Friday, officials told Reuters last week. The National Transportation Safety Board is investigating six runway incursion events since January including some that could have been catastrophic. Reuters earlier reported that Nolen is expected to take a position with electric air taxi firm Archer Aviation (ACHR.N) after he leaves the FAA. The FAA, White House and Transportation Department did not respond to requests for comment.
Persons: Polly Trottenberg, Billy Nolen, Trottenberg, Nolen, Barack Obama, Charles Schumer, Phil Washington, David Shepardson, Kanjyik Ghosh, Diane Craft Organizations: U.S, Transportation, Federal Aviation, FAA, Sunday, Street Journal, Reuters, United, National Transportation Safety, Archer Aviation, New York City’s, U.S . Senate, Denver International, White House and Transportation Department, Thomson Locations: United States, U.S, New York, Washington, Bengaluru
CNN —One month after four children vanished into the Colombian Amazon, a preliminary report by the country’s Civil Aviation Authority offers clues to how they could have survived the devastating airplane crash that killed every adult onboard. “…Mayday, Mayday, Mayday, 2803, Mayday, Mayday, Mayday, I have the engine at minimum, I’m going to look for a field,” he said. Air traffic control later tracked the plane veering right, the report said. The report says the plane likely first hit the trees of the dense forest, tearing the engine and propeller off, followed by a vertical drop to the forest floor. Two of three seats occupied by the children remained in place and upright despite the crash, according to the report, while one child’s seat came loose from the plane structure.
Persons: Hernando Murcia Morales, Herman Mendoza Hernández, Magdalena Mucutuy Valencia, , , , Dirección, Fidencio Valencia Organizations: CNN, country’s Civil Aviation Authority, Colombian, Caracol Locations: Colombian, Colombia, Araracuara
Annual deficit projections $3 trillion Current trajectory Full debt limit deal Debt limit bill House G.O.P. bill passed in April $2 trillion $1 trillion 2023 2028 2033 Annual deficit projections $3 trillion $2 trillion $1 trillion Current trajectory Full debt limit deal Debt limit bill House G.O.P. But negotiators are confident enough in the agreement that they are moving forward with the debt limit bill this week. The debt limit deal scenarios assume that after budget caps lift in 2026, Congress will increase spending in line with inflation. It's also possible that the entire deal holds, and the next Congress will still make vastly different spending choices.
Persons: Kevin McCarthy, Biden, , It's Organizations: House Republicans, White, New York Times, Congressional, Republicans, Office, SNAP, Internal Revenue Service, Social Security, Medicare, Savings, Energy, Biden, Medicaid, of Commerce, Federal Locations: That’s, G.O.P, Washington
Moscow airports are functioning as usual following a drone attack that damaged several buildings in the capital city and the region, Russian state news agency TASS reported Tuesday. All airports in the capital region are operating under normal conditions as of 8:00 a.m., and air traffic control dispatchers are working within normal limits, TASS reported, citing the press service of the Federal Air Transport Agency. Russia’s Ministry of Defense has claimed that Ukraine is responsible for the alleged drone attack against Moscow on Tuesday. Kyiv is yet to comment on the incident.
Illustration by Yukai Du Strikes, Delays and Lost Luggage: How to Survive Air Travel This Summer With the travel season in full swing, we compiled a guide to help you navigate the year’s most hectic time in the skies. If you don’t care which beach, shop around.” If you haven’t booked summer flights, do it now. For one, avoiding the airports with the highest levels of delays and cancellations last summer may be a good idea. They’re also getting longer inside airport lounges, longtime havens from the masses clogging the terminals at peak times. Standard membership in Priority Pass, a network of 1,300 airport lounges, starts at $99 a year, with each visit costing $35 at that level.
Persons: Yukai Du, we’ve, haven’t, Hopper, What’s, , Laura Lindsay, Ted Rossman, Priceline, Mr, Rossman, Charlotte Douglas, Toronto Pearson, it’s, , Carter Langston, Rhonda Lawson, C.B.P, you’ve, you’re, You’ll, Lawson, Emmanuel Macron, Tomasz Pawliszyn, Jamie Larounis, Larounis, they’re, SITA —, They’re, Eric Goldmann of Atlanta Organizations: Bureau of Labor Statistics, Google, Miami, JetBlue, Heathrow Airport, Amsterdam Schiphol, Gatwick, Air Canada, Labor, Newark Liberty International, La Guardia Airport, Kennedy Airport, Reagan, Miami International, Orlando International, Boston Logan International, Charlotte Douglas International, Toronto Pearson, Federal Aviation Administration, Washington , D.C, Customs, Western, Gulf, Phoenix, Transportation Security Administration, Global, Border Protection, Clear, PreCheck, Heathrow, Air, SNCF, U.S . State Department, Smart, Union, Travelers, New Tech, Airlines, Lufthansa, Siemens, Alaska Airlines, KLM, U.S . Bureau of Transportation Statistics, Apple, The Department of Transportation, American, Venture, Dallas Fort Worth International, JPMorgan Chase, Club, Chase Sapphire Reserve, Americas Locations: Europe, United States, Asia, San Francisco, Jacksonville, Fla, Miami, London, Amsterdam, U.S, La, New York, Washington, Charlotte, N.C, Newark, Orlando, Toronto, Sydney, Jakarta, Frankfurt, Munich, Heathrow, Washington ,, States, Denver, Seattle, Reno, Nev, Gulf Coast, Atlantic, Houston , New Orleans, Atlanta, Luton, T.S.A, , noncitizens, France, Britain, Italy, Germany, Berlin, Dutch, Swiss, Delta, United, Hong Kong, Dallas, Boston, North, Central, South America, Dallas , Newark
Stealth aircraft, such as the F-22 Raptor or the F-35 Lightning II 5th generation jets are equipped with Luneburg (or Luneberg) lenses: radar reflectors used to make the LO (Low Observable) aircraft (consciously) visible to radars. In fact, tactical fighter-sized stealth aircraft are built to defeat radar operating at specific frequencies; usually high-frequency bands as C, X, Ku and S band where the radar accuracy is higher (in fact, the higher the frequency, the better is the accuracy of the radar system). However, once the frequency wavelength exceeds a certain threshold and causes a resonant effect, LO aircraft become increasingly detectable. For instance, ATC radars, that operate at lower-frequency bands are theoretically able to detect a tactical fighter-sized stealth plane whose shape features parts that can cause resonance. F-35s deployed abroad usually feature their typical four radar reflectors: to exaggerate their real RCS (Radar Cross Section) and negate the enemy the ability to collect any detail about their LO "signature".
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