TROUBLESHOOT INLET COWL ANTI-ICING SYSTEM PADA COWL VALVE OPEN LIGHT BOEING 737-800 PK-XXX DI HANGGAR 4 PT. GMF AEROASIA

YULIAN EKA PRASETYA, HANDIKA (2020) TROUBLESHOOT INLET COWL ANTI-ICING SYSTEM PADA COWL VALVE OPEN LIGHT BOEING 737-800 PK-XXX DI HANGGAR 4 PT. GMF AEROASIA. Tugas Akhir thesis, Institut Teknologi Dirgantara Adisutjipto.

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Abstract

The anti-icing cowl inlet system serves to prevent the occurrence of ice on the engine inlet cowl. The anti-icing cowl Inlet system will transmit the hot air from the compressor to the engine inlet cowl. This system is controlled by switches that are in the overhead panels on the anti-icing panels. Failure in the anti-icing cowl inlet can be known by conducting initial identification and testing. The failure can be an open loop caused by the improper installation of the connector cable pin. It can be known by conducting a continuity test pin of the DP 1303 Connector (pin 9) on the cowl thermal anti-icing duct overpressure switch. After doing continuity test the result is open loop. This is due to the installation of a less precise DP 1303 connector pin (pin 9). The troubleshooting process is done by replacing a broken DP 1303 (pin 9) connector pin with the DP connector pin 1303 (pin 9) being serviceable. After replacement of the connector pin, the final test is done to ensure that the inlet cowl anti-icing system is not problematic. The result of the final test is cowl valve open light on the wing and engine anti-icing panel has died when the switch is in the off position. It shows that the inlets of the cowl anti-icing system are in good condition and reusable.

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