SAFETY ASSESSMENT OF N219 AIRCRAFT HYDRAULIC POWER, BRAKING AND STEERING SYSTEM

• Main Author: Yulasmana, Yoga
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/33771
• Institution: Institut Teknologi Bandung

This thesis contain about a safety assessment conducted on the N219 aircraft to ensure that its systems meet the safety requirements. Several N219 aircraft systems which concern in this thesis consist of hydraulic power, braking and steering system. Further, the safety requirements will be established by the aviation authority as a certification basis for satisfying the CASR Part 23 according to the N219 category as a commuter aircraft. To conduct safety assessment process on those systems, this thesis follows the process outlined in SAE ARP4761 document. It encompasses Functional Hazard Assessment (FHA) and System Safety Assessment (SSA). For Preliminary System Safety Assessment (PSSA) had been performed, because design of the system was already defined. The quantitative analysis for this assessment use Fault Tree Analysis (FTA) and Markov Analysis (MA). The comparative results obtained from both of methods show that there is no significant difference. The difference in results is only found for longer period of operation in the system. These results indicate that MA can be used as a validation method for FTAs as well, and vice versa. Subsequently because MA method can handle repair condition better than FTA, this thesis conduct a maintainability study for further consideration analysis. It concludes that the high maintainability target can only obtained for the small failure rate.