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All Journal Community Development Journal: Jurnal Pengabdian Masyarakat Langit Biru: Jurnal Ilmiah Aviasi
Arrafat, Bhima Sakti
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Humanities Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Public Health Transportation

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Low Compression in the Cylinder of Aircraft Piston Engine Due to Gas Leakage Widoro, Ego; Arrafat, Bhima Sakti; Ramadhani, Ryan Okta; Purba, Renaldi Rizki
Langit Biru: Jurnal Ilmiah Aviasi Vol 18 No 3 (2025): Langit Biru: Jurnal Ilmiah Aviasi
Publisher : Politeknik Penerbangan Indonesia Curug

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54147/langitbiru.v18i3.1336

Abstract

Piston-prop aircraft are typically used in general aviation and consist of an internal combustion engine paired with a propeller. The combustion chamber in the cylinder must remain leak-proof during the compression and power strokes to maximize power output. Leakage in the combustion chamber is one of the factors that cause failure to reach peak pressure during the compression stroke. This study focuses on low compression in the cylinder of the aircraft piston engine due to gas leakage, failing to reach peak pressure. Three experienced aircraft maintenance engineer license holders were involved in the interview for this study. Most frequently occur in valves, particularly in exhaust valves due to carbon deposits accumulating around the valve face. Second, piston leaks are indicated by too large side clearance of compression piston rings or in-line compression piston ring gaps, and finally, although leaks are rarely found in the spark plug area, it is still recommended to check this area when performing a compression check. Further research can be conducted using quantitative research to determine the frequency of occurrence. It can also be done with intensive research involving laboratories to find out the cause.
KAJIAN SISTEM PELAPORAN KEAMANAN BERBASIS WEB GUNA EFISIENSI KINERJA AVIATION SECURITY DI BANDAR UDARA INTERNASIONAL AHMAD YANI SEMARANG Kardi, Kardi; Arrafat, Bhima Sakti; Adriansyah, Feri; Pratiwi, Ayu Kumala; Aliansyah, Devina
Community Development Journal : Jurnal Pengabdian Masyarakat Vol. 5 No. 6 (2024): Vol. 5 No. 6 Tahun 2024
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/cdj.v5i6.39823

Abstract

Bandar Udara Ahmad Yani merupakan bandar udara yang berada dibawah pengelolaan PT. Angkasa Pura I (Persero) yang memiliki fungsi sebagai pintu gerbang dan ujung tombak lalu lintas udara serta perekonomian yang berlokasi di bagian barat kota Semarang. Salah satu unit di Bandara Internasional Ahmad Yani Semarang yang bertugas melaksanakan keamanan bandara/penerbangan adalah Unit Aviation Security. Menurut Peraturan Menteri Perhubungan Nomor : PM 9 tahun 2024 tentang Keamanan Penerbangan Nasional, Keamanan Penerbangan (aviation security) adalah suatu keadaan yang memberikan perlindungan kepada penerbangan dari tindakan melawan hukum melalui keterpaduan pemanfaatan sumber daya manusia, fasilitas, dan prosedur. Personel pengamanan penerbangan yang diberi tugas dan tanggung jawab dibidang keamanan penerbangan harus memiliki lisensi. Personel pengamanan bertugas dan bertanggung jawab menjaga & menjamin keselamatan para pekerja dan pengguna jasa penerbangan. Untuk melaksanakan tugas tersebut dengan baik, setiap personil harus membuat laporan harian setelah bertugas, apakah pada saat bertugas mengalami hambatan/kendala yang disebabkan oleh tidak berfungsinya alat/ fasiilitas yang digunakan atau ada kejadian yang memerlukan tindak lanjut, untuk itu diperlukan system pelaporan yang sederhana, mudah dilaksanakan dan aman untuk penyimpanan dokumentasinya dengan menggunakan teknologi aplikasi berbasis web.
Co-Authors Adriansyah, Feri Aliansyah, Devina Kardi Kardi, Kardi Pratiwi, Ayu Kumala Purba, Renaldi Rizki Ramadhani, Ryan Okta Widoro, Ego