The NTSB has asked the FAA to require MD Helicopters to conduct tests to “enable the full analysis” of all critical loads for tension-torsion (T-T) straps installed in the notar anti-torque fan of MD 500N, 600N and 900 rotorcraft. The recommendations stem from the Safety Board’s ongoing investigations into two nonfatal accidents involving MD 900s in 2004.
AINalerts » April 18, 2006
Investigators have determined that a Cessna 208B Caravan that crashed near Pelee Island, Ontario, on Jan. 17, 2004, exceeded the maximum allowable takeoff weight by at least 15 percent, in addition to being contaminated with ice. All 10 people on board were killed in the accident.
A number of changes to service charges have been enacted by Nav Canada, the private corporation that provides the country’s air navigation and ATC services. The changes include a reduction in the weight factor used for the application of the terminal services charge and a related change to the daily charge. This will mean a reduction in the charge for larger aircraft and an increase for smaller aircraft.
On May 1, the FAA will implement a new air traffic management initiative called the Airspace Flow Program. To explain the AFP, the FAA recently released Advisory Circular 90-102. The AFP is used when severe weather constrains traffic in the Northeast, and affected pilots will receive an expect departure clearance time (EDCT) before takeoff, which helps ATC meter traffic through areas with severe weather.
Reacting to potential safety vulnerabilities in flight control systems installed on Part 25 business jets, the FAA is amending the airworthiness standards for autopilot, autothrust and flight guidance systems. Based on a 2004 FAA proposal and input from airframe and avionics manufacturers, effective May 11 the amended rules require automatic flight control design changes in newly certified business jets with mtow greater than 12,500 pounds.