GPS designers understood from the beginning that the system’s weak signals would be vulnerable to inadvertent or deliberate interference, with the threat formally recognized by the DOT’s Volpe Center in Cambridge, Mass., on Sept. 10, 2001�one day before 9/11. Since that time, the Department of Defense has run annual all-altitude tests�over the Western U.S.
Instrument landing system
Cessna Citation 501, West Midlands, UK, Nov. 19, 2010–The twinjet was destroyed when it caught fire after striking the ILS glideslope antenna while landing in fog at Birmingham International Airport at the end of an organ transport flight. The pilot was seriously injured, while the copilot was treated for burns and released the next day. The organ was recovered from the wreckage and was safely delivered to the hospital.
Bell Helicopter announced last month that its new 429 light twin has been approved for precise wide area augmentation system (Waas) glidepath operations. The capability will allow the 429 to be flown to point-in-space approaches when the cloud ceiling is as low as 250 feet agl and to conduct steep (9 degrees) localizer precision with vertical guidance (LPV) approaches at a minimum velocity for instrument approaches (Vmini) of 45 knots.
An alert radar controller monitoring traffic at Shannon air traffic services helped to prevent a Gulfstream IV-SP from crashing near Killarney, Ireland, last July. According to a UK incident report, the Gulfstream crew requested a return to Kerry Airport after a fracture formed on the left-hand windshield shortly after takeoff. Kerry Tower cleared the aircraft for the ILS approach to Runway 26.
An alert radar controller monitoring traffic at Shannon air traffic services is credited with helping to prevent a Gulfstream IV-SP from crashing into the ground near Killarney, Ireland, last July. According to a UK incident report released yesterday, the Gulfstream crew requested a return back to Kerry Airport after a fracture formed on the left-hand windshield shortly after takeoff.
Cobham Avionics, specifically the former S-Tec autopilot house in Mineral Wells, Texas, yesterday described the functions, features and financial benefits of its HeliSAS digital two-axis, stability-augmentation and autopilot system (SAS) for light helicopters.
Horizon Air on December 30 became the first scheduled-service passenger carrier to operate a flight using wide area augmentation system (Waas) technology. Equipped with dual Universal Avionics UNS-1Ew flight management systems, Horizon’s only Waas-capable 76-seat Bombardier Q400 carried out the trailblazing mission on a flight from Portland to Seattle.
The French helicopter industry is endeavoring to catch up with the U.S. in satellite-aided precision approaches, as it strives to enable landings and takeoffs at hospitals in IMC. The ultimate aim is to build a solid network of inter-hospital low-altitude IFR routes, according to participants at a forum held by the Toulouse-based air and space academy late last year.
The Swiss government has approved Lugano Airport’s plan to install more visual aids, including a lead-in light row with strobe lamps for Runway 19. This will allow waiving current low-visibility restrictions below 3,000 feet for aircraft landing under IFR and should guarantee a weather-related dispatch reliability of 99 percent, versus the current 97 percent. Airport authorities want the new installation certified and operational by October.
Certain head-up guidance systems produced by Rockwell Collins can now be used to fly to lower Category I ILS approach minimums after the company last month obtained a special authorization from the FAA’s flight technology and procedures division.