The FAA has issued an Airworthiness Directive for the Bombardier CL-600-2B16 (Challenger 604) prompted by multiple reports of short-circuit events during pre-delivery inspections and test flights. One event resulted in smoke in the cockpit. The AD requires replacing or relocating certain circuit-breaker panel bus bars, inspecting for any loose or improperly crimped lugs and replacement if necessary, and inspecting for foreign object damage in certain areas.
Hawker Beechcraft 99, Moline, Ill., Feb. 18, 2008–No one was injured during the in-flight fire, which the Safety Board attributed to the arcing of the resistor and silicone-controlled rectifier in the flap control circuit. The pilot of the Suburban Air Freight cargo flight “smelled electrical smoke and saw flames behind the power quadrant,” while descending to land at Quad City International Airport (MLI).
Irvine, Calif.-based Eaton Corp. (Booth No. 5967) recently celebrated the successful flight testing of its arc fault circuit breaker (AFCB) technology as a stand-alone replacement for existing circuit breakers. Completing more than 350 normal service flights aboard a U.S.
A subtle change in the material used in an electrical component caused seven fires in Bombardier CRJs, according to an NTSB recommendation released on March 30. Tyco Hartman, the manufacturer of the component, changed the material and didn’t notify Bombardier that the new part was coated with a different material that turned out to be susceptible to moisture-induced arc-tracking.