TROUBLESHOOTING VALVE OPEN LIGHT OF CROSSFEED VALVE STAY ON BRIGHT PADA PESAWAT BOEING 737-900ER

RESTU FAUZI, RUDY (2020) TROUBLESHOOTING VALVE OPEN LIGHT OF CROSSFEED VALVE STAY ON BRIGHT PADA PESAWAT BOEING 737-900ER. Tugas Akhir thesis, Institut Teknologi Dirgantara Adisutjipto.

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Abstract

Airplanes are one of the fastest growing forms of transportation in the technology sector. Frequently the aircraft operates, it will experience a decrease in performance over a long period of time. To keep the aircraft safe and airworthy, maintenance must be carried out. During maintenance on the Boeing 737-900ER aircraft, an indication of damage to the VALVE OPEN light was found when the crossfeed valve switch was closed. Therefore, troubleshooting is done to solve the problem. This study uses a troubleshooting method that refers to FIM 28-22 task 807. The troubleshooting process is carried out by checking the parts that might cause the VALVE OPEN light to turn on when the switch is closed. The parts to be checked are the wiring, switch, and crossfeed valve. Then the results showed that the damage occurred in the crossfeed valve actuator which was malfunctioning due to overheating. So that replacement is done to solve the problem. After replacement, an operational test is performed and the system returns to normal.

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