Airworthiness Directives; Boeing Model 757 Series Airplanes Equipped With Abex Spoiler Actuators
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ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.
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Airworthiness Directives; Boeing Model 757 Series Airplanes Equipped With Abex Spoiler Actuators

Filetype[PDF-123.47 KB]


English
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Details:

  • Corporate Creators:
    United States. Federal Aviation Administration
  • Subject/TRT Terms:
  • Resource Type:
    Policy Statement
  • Geographical Coverage:
    United States
  • Corporate Publisher:
    United States. Department of Transportation. Federal Aviation Administration
  • Abstract:
    This amendment adopts a new airworthiness directive (AD), applicable to Boeing Model 757 series airplanes that are equipped with certain Abex spoiler actuator electro-hydraulic servo valves (EHSV) installed in Abex spoiler actuators. This action requires a one-time inspection of the spoiler actuator to determine if a suspect EHSV is incorrectly installed, and replacement of the EHSV, if necessary. This amendment is prompted by reports that a bias spring in the Abex EHSV of certain Abex spoiler actuators has been found to be incorrectly installed. The actions specified in this AD are intended to prevent a significant control upset of the airplane as a result of problems associated with an incorrectly installed EHSV in the spoiler actuator assembly.
  • Content Notes:
    2020-05-13: This item was removed from ROSA P because it does not conform with NTL’s collection development policy. If you have questions about this decision, please contact us at https://transportation.libanswers.com/
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