Summary
We propose to adopt a new airworthiness directive (AD) for all The Boeing Company Model 787 series airplanes. This proposed AD was prompted by reports that, under certain conditions, the automatic dependent surveillance--broadcast (ADS-B) out function and air traffic control/traffic alert and collision avoidance system (ATC/TCAS) functions can transmit incorrect data. This proposed AD would require an inspection or records review to determine if certain software is installed, the installation of new software for the integrated surveillance system (ISS) operational program software (OPS) if necessary, a software check, and applicable on-condition actions. For certain airplanes, this proposed AD would also require the installation of new software for the ISS OPS and the displays and crew alerting (DCA) database. We are proposing this AD to address the unsafe condition on these products.