FAA posts Airworthiness Directive for Boeing Dreamliner . Score: 6 Boeing has already started installing the modified battery system on 10 aircraft in service and nine aircraft in production , said Boeing CEO Jim McNerney during Boeing 's earnings call Wednesday . It outlines required modifications that must be inspected before flight . Nearly 50 Boeing 787s have been grounded more than three months .
FAA posts Airworthiness Directive for Boeing Dreamliner . Score: 6 It outlines required modifications that must be inspected before flight . Nearly 50 Boeing 787s have been grounded more than three months .