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From the FAA library

  • Chapter 14: Human Factors › International Ergonomics Association (IEA)

    knowledge on Airbus procedures was considered a primary cause of this incident. Probable cause was failure of maintenance to install the correct hydraulic landing gear extension component and the failure of inspection to comply with post-maintenance test procedures ... improper replacement of the forward elevator trim cable and subsequent inadequate functional check of the maintenance performed resulted in a reversal of the elevator trim system and a loss of control in flight. Factors were the flight crew’s failure…

  • Chapter 11: Communication & Navigation › Installation of Communication & Navigation Equipment › Considerations

    allow easy access for inspection, maintenance, and exchange of units. The installation of avionics equipment is partially mechanical, involving sheet metal work to mount units, racks, antennas, and controls. Routing of the interconnecting wires, cables, antenna leads, etc. is also ... instrument panel and no provisions have been made for such an installation, ensure that the panel is not a primary structure prior to making any cutouts. To minimize the load on a stationary instrument panel, a support bracket…

  • Chapter 6: Flight Controls › Flight Control Systems › Primary Flight Controls

    Flight Control Systems Flight Controls Aircraft flight control systems consist of primary and secondary systems. The ailerons, elevator (or stabilator), and rudder constitute the primary control system and are required to control an aircraft safely during flight. Wing flaps, leading ... edge devices, spoilers, and trim systems constitute the secondary control system and improve the performance characteristics of the airplane or relieve the pilot of excessive control forces. Primary Flight Controls Aircraft control systems are carefully designed to provide adequate responsiveness…