PENANGANAN DAN ANALISIS KEGAGALAN ZERO DUCT PRESSURE PADA PNEUMATIC SYSTEM PESAWAT BOEING 737-300 DI HANGGAR PT. MULYA SEJAHTERA TEKNOLOGI DENGAN MENGGUNAKAN METODE FAULT TREE ANALYSIS

Azis, Hainur (2022) PENANGANAN DAN ANALISIS KEGAGALAN ZERO DUCT PRESSURE PADA PNEUMATIC SYSTEM PESAWAT BOEING 737-300 DI HANGGAR PT. MULYA SEJAHTERA TEKNOLOGI DENGAN MENGGUNAKAN METODE FAULT TREE ANALYSIS. Tugas Akhir thesis, Institut Teknologi Dirgantara Adisutjipto.

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Abstract

Pneumatic engine bleed air system is one of the main systems that functions to control the flow of air distributed from the Pneumatic manifold. The main supply of bleed air to the manifold is obtained directly from the engine stage 5th compressor. Damage to the bleed air regulator component results in the distribution of bleed air not flowing, which is indicated by the penumatic indicator on, and has the potential to endanger flight safety. Analysis of failures that arise in the reduction of bleed air from the pressure indicator on the pneumatic. In addition to using the observation method, this study also uses the fault tree analysis method to find the cause of failure in the bleed air regulator component which functions to control the amount of bleed water entering. Zero duct pressure failure was caused by the bleed air regulator component, and troubleshooting the bleed air regulator. The troubleshooting process for the bleed air regulator is carried out referring to the Boeing 737-300 manual chapter 36. Replacement components are carried out using AMM TASK 36-12-35, after replacing the bleed air regulator components, a bleed air indicator system is produced which shows the pressure has returned to normal. By using the fault tree analysis method, related to problems with Zero Duct ressure found 21 basic events, namely (1) trouble hight stage valve, (2) trouble hight stage regulator, (3) trouble bleed air regulator, (4) sensor pressure problem, ( 5) sensor temperature problem, (6) connector problem, (7) pressure pipe problem, (8) hight stage regulator problem, (9) valve stage 9th supply problem, (10) extension ring problem, (11) pipe side inner problem , (12) power supply problem, (13) connector problem, (14) connector problem, (15) line problem, (16) connector valve problem, (17) control valve supply line problem, (18) fan broken, (19 ) fan is bent, (20) TEE is broken, and (21) is clogged with FOD.

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