13 Jun 2025

✈️New Airworthiness Directive Proposed for Boeing 787 Models

Airworthiness Directives; The Boeing Company Airplanes

Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 787-8, 787-9, and 787-10 airplanes. This proposed AD was prompted by a report of multiple instances of loss of transponder for airplanes entering airspace in the presence of continuous wave (CW) interference, where the transponder did not meet the minimum operational performance standards (MOPS) requirement for transponder response. This proposed AD would require replacing the left and right integrated surveillance system processor unit (ISSPU) hardware. The FAA is proposing this AD to address the unsafe condition on these products.

Agencies

  • Transportation Department
  • Federal Aviation Administration

Business Impact ?

$$$ - High

The proposed airworthiness directive (AD) mandates compliance actions for affected Boeing airplane models, requiring costly replacements of critical hardware. This directly impacts operating expenses for airlines and aviation businesses in compliance with safety regulations.

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