EASA AD US-2018-22-09
Navigation - Integrated Surveillance System Operational Program Software - Inspection / Installation
Summary
The Federal Aviation Administration's Airworthiness Directive 2018-22-09 addresses all Boeing Model 787 series airplanes. This directive mandates inspections and software installations related to the Integrated Surveillance System Operational Program Software to correct issues causing incorrect data transmission by the ADS-B out and ATC/TCAS functions. It also requires updates to related software files and databases within the aircraft's display and crew alerting systems.
What Changed
This new airworthiness directive introduces requirements for inspecting or reviewing records to verify software installation, installing updated ISS OPS software, and performing software checks. For certain airplanes, it adds requirements to install updated ISS OSS and ASO files and a new ISS definition file database. The directive also allows for later-approved software versions under specific conditions and clarifies credit for prior compliance with earlier service bulletins.
Why It Matters
This directive is critical for aviation professionals because it addresses a safety risk where incorrect position and altitude data could lead to mid-air collisions. Operators and maintenance teams must ensure compliance to maintain aircraft airworthiness and avoid potential operational disruptions. The directive also streamlines compliance by clarifying acceptable software versions and crediting prior actions, aiding in efficient fleet management.
What To Do
Operators of Boeing 787 series airplanes must inspect or review records to determine installed software versions and install updated ISS OPS software as required. For certain aircraft, additional software files and databases must be updated. Compliance with this directive is mandatory by December 10, 2018, and operators should consult the specified Boeing service bulletins and FAA contacts for detailed procedures.
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