Records of the Airworthiness Division and its successor the Safety Regulatory Group relating to their responsibility for ensuring civil aircraft are fit to fly.
General registered files of the Safety Regulatory Group are in DR 69. Files of the Survey, Systems and Equipment, Powerplant, Flight, and Aircraft Projects Departments are in DR 8, DR 28, DR 30, DR 31, DR 33 and DR 59 respectively. Representative files of area offices are in DR 27
Accident files and registered files of the Safety Data and Analysis Unit are in DR 11 and DR 42 respectively.
Aircraft and helicopter type records are in DR 1, DR 7, DR 10 and DR 41, manuals are in DR 6 and flight test reports in DR 18. Files on the preparation of the Requirements are in DR 15 and papers of various committees on requirements in DR 19 - DR 24.
Executive Committee minutes and papers are in DR 73.
Registered files of the Hovercraft Section are in DR 74. Records of the Hovercraft Requirements Committee are in DR 44
Files on aircraft maintenance approvals and the issue of airworthiness certificates are in DR 5, DR 16, DR 26 and DR 34. Aircraft radio files are in DR 80. Airworthiness administration notices are in DR 62. Airworthiness Approval Notes issued in connection with new or modified aircraft designs are in DR 34