Airworthiness Directives; Boeing Model 757 Series Airplanes Equipped With Abex Spoiler Actuators

Details

• Corporate Creators:
  United States. Department of Transportation. Federal Aviation Administration
• Subject/TRT Terms:
  • Aviation safety
  • Airworthiness
  • Aircraft
  • Safety measures
• Resource Type:
  Tech Report
• 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/
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/13385/dot_13385_DS1.pdf
• File Type:
  [PDF - 123.47 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:81325216e7e2594d08340e0f24921c15e57b43cea71fcb8e3fad80e974203f884226858803c1b231c854577d06a780ac4baf3f89de633ceb7e4003e888df0a9b