Advisory Circulars and Factsheets Advisory Circulars and Factsheets are types of supporting information issued by DASA to promote understanding of, and compliance with, the DASR. DASP Manual The Defence Aviation Safety Program (DASP) Manual is issued by the Defence Aviation Authority to provide policy and guidance for the administration and implementation of the DASP. DASR The Defence Aviation Safety Regulation (DASR) is published within Volume 2 of the DASP Manual and includes Acceptable Means of Compliance and Guidance Material. Recognition Recognition of other civil and military aviation authorities by DASA promotes flexibility and interoperability. Design Requirements The Defence Aviation Safety Design Requirements Manual (DASDRM) identifies acceptable design standards for the certification of aviation platforms, systems and facilities. Policy Development The Policy Development section includes Notices of Proposed Amendment, Comment Response Documents and the DASA Policy Roadmap. DASAMAN The Defence Aviation Safety Assurance Manual (DASAMAN) provides the policies and procedures to support implementation of the Defence Aviation Safety Framework and articulates the activities undertaken by DASA.