Stall

May 15, 2013 - 11:07am

Aviation Partners has issued a Service Bulletin for the Hawker Beechcraft/BAE 125 Series 800A/B, C-29A, Hawker 800 and Hawker 800XP. The Service Bulletin provides instructions to reduce the maximum permissible altitude to FL340 from FL410. The altitude limitation is implemented by an Airplane Flight Manual limitation and placards installed on the instrument panel.

Aviation Partners and the FAA consider this Service Bulletin to be a safety-related limitation until a design change to preclude the oscillations is developed and FAA approved.

April 22, 2013 - 2:58pm

Loss of control in flight related to the inability to recognize an upset and controlled flight into terrain remain the primary causes of accidents involving transport aircraft.

March 25, 2013 - 2:03pm

As experts struggle to identify why the crew of Air France 447 lost control of their A330 over the South Atlantic Ocean nearly four years ago, the industry is also still struggling to develop the precision data needed to accurately reproduce a stall in a Level D simulator. The lack of accurate stall data limits entry and recovery practice because the computers running the simulators have no idea how the aircraft will actually perform.

February 19, 2013 - 2:55pm

The second Embraer Legacy 500 flew on Friday, officially entering the flight-test and certification program for the new fly-by-wire twinjet. Since its first flight on November 27, Legacy 500 S/N 1 has logged more than 44 hours over 23 flights. Initial envelope clearances have been completed, and late last month the aircraft started stall testing.

February 4, 2013 - 3:25pm

The FAA recently published a notice to operators, training managers and inspectors of the importance of AC 120-109, to reinforce the importance of adequate flight crew training on the use of aircraft stick shakers and pushers. The increased emphasis was the result of a September 2010 Aviation Rulemaking Committee (ARC) to stem the numbers of loss-of-control accidents due to pilot unfamiliarity with stick pushers, as well as flight into icing and wind-shear conditions.

December 17, 2012 - 2:55pm

The European Aviation Safety Agency issued an emergency airworthiness directive December 4 for the angle of attack (AOA) probes of both the Airbus A330 and A340. The AD, which became effective December 6, results from an incident in which an A330 in the climb experienced a blockage of all AOA probes, leading to autopilot disconnection and activation of the alpha (angle of attack) protection system when Mach number increased.

December 4, 2012 - 2:45am

At a time when aviation has achieved an extraordinarily high level of safety, regulators and safety organizations are pushing for more improvements in pilot training to preempt future accidents and ensure that new pilots entering the ranks start off with the right approach. One of the key areas receiving extensive examination is stall training, both in the early stages of ab initio training and how it is taught later to pilots who are flying sophisticated high-performance jets.

November 6, 2012 - 5:10am
Tamarack Active Winglet

Tamarack Aerospace has unveiled the first of what it promises will be a series of active winglet systems designed to relieve wing bending loads caused by winglets. The company’s active technology load alleviation system (Atlas) should be certified and available for installation on Cirrus SR22 G1 and G2 piston singles early next year, but Tamarack is also testing Atlas, which includes new winglets, on a Cessna CitationJet 525. Tamarack brought the Atlas-equipped CitationJet to the NBAA Convention in Orlando and gave demonstration rides during the show.

November 3, 2012 - 1:25am

The NTSB has blamed the April 2, 2011, flight-test crash of a Gulfstream G650 on an aerodynamic stall and an uncommanded rolling moment that the pilots were unable to control. However, the Board also notes that it was the manufacturer’s rush to complete its aggressive flight-test schedule for obtaining certification that set the stage for the stall and uncontrollable roll.

October 30, 2012 - 9:15am
Mid-Continent’s standby attitude module

The new MD 302 standby attitude module (SAM) developed by Mid-Continent Instruments and Avionics offers avionics installers another option for standby instruments, especially in panels with little extra space. The MD302 is entirely self-contained and provides attitude, altitude, airspeed and slip information in a small package measuring just two inches by five inches and weighing 1.6 pounds.

 
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