AWB 00-4 Issue 1 - Service difficulty reporting system
Service difficulty reporting system
AWB 00-4 Issue 1, 4 May 2001
The Purpose of this AWB is to provide information on the change in name from the Major Defect Reporting to the Service Difficulty Reporting System ( SDR ) and how CASA intends to disseminate the information obtained. The name change whilst complying with the ICAO requirements, more accurately describes the system utilised in Australia.
Commercial operators, maintenance organisations and manufacturers must submit a report for each malfunction, failure or defect that occurs under the reportable categories. In addition, each commercial operator and maintenance organisation must report any other malfunction, failure or defect in an aircraft that occurs or is detected at any time, if under the opinion that the malfunction, failure or defect has endangered or may endanger the safe operation of an aircraft.
The current aircraft population is too large to achieve full knowledge of all potential safety problems solely through inspection. The SDR system assists in effective decision-making, resource utilisation and enhancement of safety. A properly implemented SDR system provides the intelligence needed to assess defects, institute early corrective action and thus assist in accident prevention.
The SDR is a feedback system, which provides a most effective database for effective decisions on matters of reliability and airworthiness. The level of sophistication of the SDR can vary from NAA to NAA. CASA's SDR system has been, for many years, coupled with the FAA and TC SDR systems. Further development of the SDR system internationally will result in a worldwide sharing of SDR information.
Most failures in aircraft parts are random. In some cases service time between intervals can be increased if based on proper statistics obtainable from data including that of a working SDR system. Truly meaningful inspection periods should result from proper inspection rationalisation based on statistical records resulting from full defect reporting. Conversely, SDR information may be used to convince operators that reliability of certain aeronautical products must be improved.
An effective SDR system will provide information, which will enable CASA to make sound regulatory decisions and to provide an improved advisory service to the operator. The Maintenance Standards Branch uses the following to promulgate this information; Airworthiness Directives, Advisory Circulars, Airworthiness Bulletins and the Flight Safety Magazine Alerts.