1、Lessons Learned Entry: 1293Lesson Info:a71 Lesson Number: 1293a71 Lesson Date: 2002-01-01a71 Submitting Organization: ARCa71 Submitted by: DR Mendoza/ M. SumichSubject: The Effects of the Risk Mitigation Plan Approval and Change Cycle on Minimizing Risk Description of Driving Event: In order to miti
2、gate the risk associated with flying a high-performance technology demonstrator, the Project chose to build two aircraft (a primary and a backup) and operate them remotely. While this approach reduced the risk to an acceptable level with respect to the Projects established risk threshold, upper mana
3、gement and other stakeholders remained uncomfortable. Thus, the Projects risk management approach had not been communicated to all stakeholders in sufficient detail, especially with respect to one of its most significant risk. Therefore, a decision was made to add a parachute recovery system to the
4、aircraft that could operate autonomously or remotely in case standard flight controls were lost. Unfortunately, the decision to incorporate the parachute recovery system was made after the aircraft design was baselined and had to be “reverse engineered“ to fit into a bay on the aircraft. This result
5、ed in an increase in size, weight, and development time of the aircraft.Lesson(s) Learned: The Projects most significant risks and their mitigation should have upper management approval and be communicated to all stakeholders as early in the design process as possible. Otherwise, late changes to a r
6、isk mitigation strategy, such as reverse engineering a vehicle recovery solution after its design has been baselined, may actually increase the Projects overall risk.Recommendation(s): To ensure effectiveness and appropriateness, a Projects risk management process should be communicated to all stake
7、holders. The risk management plan should describe the level of management approval/concurrence required for each level of risk. The process for changing risk mitigation plans should also be described and require that regression analysis and optimization studies are conducted to ensure that the overa
8、ll Project risk is minimized. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Evidence of Recurrence Control Effectiveness: N/ADocuments Related to Lesson: N/AMission Directorate(s): a71 Exploration Systemsa71 Sciencea71 Space Operationsa71 Aeronauti
9、cs ResearchAdditional Key Phrase(s): a71 Aerospace Safety Advisory PanelAdditional Info: Approval Info: a71 Approval Date: 2002-10-10a71 Approval Name: Anthony Bricenoa71 Approval Organization: ARCa71 Approval Phone Number: 650-604-1012Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
