FOREWORD This addendum provides a brief description of the use of flame retardants in the passenger cabin@ as well as a short summary of some flame retardant exposure data collected on aircraft and a list of references for the user to review some of the related health hazard literature. This addendum represents a new stand-alone section intended for Guideline 28-2012. Note: In this addendum@ changes to the current standard are indicated in the text by underlining (for additions) and(for deletions) unless the instructions specifically mention some other means of indicating the changes.