Gulfstream Aerospace technicians were responsible for uncovering a preflight systems test malfunction that led to last week’s FAA Airworthiness Directive on all 260 G350/450s. The December 12 directive–2012-NM-219-AD–took effect December 17 and addresses the flap/stabilizer electronic control unit cockpit crewmembers normally test before the first flight of the day.
The FAA published an Airworthiness Directive December 12 on the Gulfstream G350/450 after what is described as routine maintenance testing by the manufacturer uncovered a fault in one of the aircraft test systems used during normal checks by pilots before the first flight of the day. The test that failed normally confirms the operational readiness of the hydraulic brake used to stop the pitch trim motor in the event of a runaway of that system.
JetFlite International’s (JFI) Long Beach, Calif. facility has launched an aircraft refinishment program that repairs and refinishes existent components and materials with minimal replacing.
Pelzer Consult has its own solution to cabin noise in the form of new “closed sandwich” trim tab technology. Conventional trim panels, said the Swiss acoustic products supplier, create an undesired loudspeaker effect.
Inconsistencies between the Mitsubishi MU-2B elevator trim indicator scale dial and the elevator trim mechanical stop have prompted the FAA to issue an airworthiness directive, requiring owners to modify the scale dial so that it is consistent with elevator trim capability. The inconsistency has led to several incidents in which pilots mistakenly assumed that more nose-down trim was available and inadvertently jammed the trim system.