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All Journal Jurnal Elemen Conference SENATIK STT Adisutjipto Yogyakarta Angkasa: Jurnal Ilmiah Bidang Teknologi Compiler KACANEGARA Jurnal Pengabdian pada Masyarakat Jurnal Penamas Adi Buana Abdimas Galuh: Jurnal Pengabdian Kepada Masyarakat Reswara: Jurnal Pengabdian Kepada Masyarakat Southeast Asian Mathematics Education Journal Jurnal Anugerah: Jurnal Pengabdian Kepada Masyarakat Bidang Keguruan dan Ilmu Pendidikan JUTECH : Journal Education and Technology Vortex Jurnal Pengabdian Masyarakat Intimas (Jurnal INTIMAS): Inovasi Teknologi Informasi Dan Komputer Untuk Masyarakat Jurnal Peradaban Masyarakat (JPM) Journal of International Conference Proceedings Jurnal Manajemen dan Teknologi Rekayasa Joong-Ki Joong-Ki
Rahmawati, Fajar Khanif
Institut Teknologi Dirgantara Adisutjipto
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Journal : Vortex

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Analysis of The Implementation of The Concept of Higher Airspace Operations in Indonesia Limbong, Marchel Jeriko Togu; Medianto, Rully; Edi, Prasetyo; Gunawan, Gunawan; Rahmawati, Fajar Khanif; Prattiwi, Elisabeth Anna
Vortex Vol 6, No 2 (2025)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/vortex.v6i2.3654

Abstract

The advancement of aviation technology and growing airspace demand have introduced the Higher Airspace Operation (HAO) concept, which manages airspace above FL550 (55,000 feet). Globally, regions like the United States and the European Union are developing regulatory and technological systems to integrate HAO into existing air traffic management. In contrast, Indonesia’s readiness remains limited due to the lack of specific regulations, infrastructure, and surveillance capabilities. This study assesses Indonesia’s preparedness to adopt HAO through a Systematic Literature Review (SLR) and expert interviews. Findings indicate the need for adaptive policies aligned with technological progress, improved communication, navigation, and surveillance systems, and comprehensive legal frameworks to support emerging airspace vehicles such as High-Altitude Platform Systems (HAPS), suborbital aircraft, and reentry vehicles. The research also proposes a dynamic, collaborative operational model suited to Indonesia’s unique geographical conditions and institutional environment.
Analysis Pneumatic System of The Causes of Engine Bleed Trip on Boeing 737-900 ER Aircraft Using the Fault Tree Analysis (FTA) Method Kurniawan, Muhammad Hadi; Adiputra, Bangga Dirgantara; Rahmawati, Fajar Khanif; Mulyani, Sri; Prattiwi, Elisabeth Anna
Vortex Vol 6, No 1 (2025)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/vortex.v6i1.3105

Abstract

The Engine Bleed Air system is one of the primary systems in an aircraft and Its components include the Pressure Regulating Shutoff Valve (PRSOV), Bleed Air Regulator (BAR), High Stage Valve (HSV), High Stage Regulator (HSR), Precooler Control Valve (PCCV), and PCCV sensors 390 and 450. Any malfunction in these components can directly impact aircraft safety and flight operations. This research analyzes the performance failures of the system in regulating the temperature and pressure distributed by the bleed air system, particularly focusing on engine bleed trips. This study aims to determine the percentage of necessary component replacements in the air bleed engine system using the Fault Tree Analysis (FTA) method. Primary data is collected from aircraft maintenance databases and interviews. The percentage of main component replacements needed are: thermostat sensor 390 (42.3%), Precooler Control Valve (19.2%), Pressure Regulating Shutoff Valve (11.5%), and Bleed Air Regulator (7.7%). The remaining components account for the other percentages.
Analysis Problem of Air Bleed Maintenance Message Using Fault Tree Analysis (FTA) Method Kater, Jimi; Adiputra, Bangga Dirgantara; Mulyani, Sri; Priyahapsara, Istyawan; Rahmawati, Fajar Khanif; Prattiwi, Elisabeth Anna
Vortex Vol 6, No 2 (2025)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/vortex.v6i2.3639

Abstract

The Airbus A320 has two main engines and an Auxiliary Power Unit (APU) that generate high-temperature, high-pressure bleed air used for cabin cooling, anti-icing, and pressurization. Two temperature sensors, Fire Loop A and Fire Loop B, monitor the bleed air distribution line for hot air leaks. An Air Bleed Maintenance Message signals a malfunction in these fire protection loops and requires quick maintenance to avoid system failure. Leaks, especially near the wing and fuel tank, pose significant hazards. This study uses Fault Tree Analysis (FTA) to find the root causes of this message. The main causes identified are damaged interconnecting cables, failure in the Bleed Monitoring Computer (BMC), and faults in Fire Loop A or B. The FTA diagram helps technicians trace each component's role in the failure, aiding efficient inspection and maintenance. This method aims to boost system reliability and improve flight safety.
Optimization of Turn Around Time Calculation for C05-Check Aircraft Maintenance Using Critical Path Method (CPM) On Boeing 737-900er Aircraft Islami, Alfi Daffa; Rahmawati, Fajar Khanif; Mulyani, Sri; Prakoso, Agung; Hartini, Dwi; Prattiwi, Elisabeth Anna
Vortex Vol 6, No 2 (2025)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/vortex.v6i2.3644

Abstract

Boeing 737-900 ER maintenance in Indonesia emphasizes timely, efficient routines to minimize risks. Using the Critical Path Method (CPM), the analysis calculates the Turn Around Time (TAT) for C05-Check maintenance. The CPM results estimate a TAT of 20.47 days (rounded to 20 days), while the company's data shows 21.73 days (rounded to 22 days), indicating a 2-day difference. This discrepancy highlights potential areas for improving maintenance efficiency. The TAT efficiency for the maintenance process is calculated at 0.057%. Optimizing mechanic workload based on this analysis can enhance turnaround times and ensure aircraft safety and operational scheduling. Accurate TAT predictions are vital for balancing maintenance quality with airline efficiency, making CPM a valuable tool in operational planning and resource allocation. Continued comparison with company data ensures maintenance practices remain precise, reducing unexpected delays and maintaining flight safety standards.
Advantages and Losses Analysis on Burning Hours by The Production Planning Control in Determining Time Implementation of Maintenance Activities Rahmawati, Fajar Khanif; Rakha, Humaid Iswahyu Hafizh
Vortex Vol 2, No 2 (2021)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (972.031 KB) | DOI: 10.28989/vortex.v2i2.981

Abstract

Burning Hours is the one of  policy in scheduling aircraft maintenance. With the burning hours the operator could performed aircraft maintenance before the due time. Burning Hours is indeed beneficial for flight operators to maintain the stability of the safety of the aircraft operation. Using the quantitative analysis method with the sample data’s from two aircraft, found that the burning hours affects to Burning Hours Cost loss for every aircraft meintenance activity. The value of Burning Hours Cost Loss and Potential Lost per Day needs to be considered by operators in scheduling maintenance activities, because it is possible that Burning Hours cannot be avoided in aircraft operation. Based on the data processing,  the  value of burning hours cost lost is not more than limit of potential lost per day.  However it should also be considered if burning hours applied continuously will increase maintenance cost. Therefore, between maintenance planning department and the operation department should keep good coordination to minimize the burning hours cost loss. Keywords: Planning, Maintenance, Burning Hours
Co-Authors abdul haris subarjo, abdul haris Agung Prakoso Anggawaty, Dwi Anisafitri, Berni Anton Setiawan Honggowibowo Arfandi Achmad Arwin Datumaya Wahyudi Sumari Baihaqi, M Imam Bambang Sudibya, Bambang Bangga Dirgantara Adiputra Benedictus Mardwianta, Benedictus Budiono, Cyrilus Sukaca Denny Dermawan Deny Kusumaningrum, Maria Asumpta Dwi Hartini Dwi Nugraheny, Dwi Eko Poerwanto Eli Kumolosari Esa Rengganis Sulliyartha Faturrahman, Mochamad Fikri Freddy Kurniawan Gayatri, Tasya Gunawan Gunawan Gunawan Gunawan Hanawa, Riski Riswandi Islami, Alfi Daffa Istyawan Priyahapsara Kater, Jimi Kris Hariyanto Kurniawan, Muhammad Hadi Lasmadi, Lasmadi Leanny, Shania Intan Limbong, Marchel Jeriko Togu Lukito, Indro Maria Asumpta deny Kusumaningrum Maria Asumpta Deny Kusumaningrum, Maria Asumpta Deny Muhammad Abdul Ghofur Nurcahyani Dewi Retnowati Nurdin, Riani Perkasa, Syahmi Pinandhita, Lazuardy Rahendra Prakoso, Suyudi Imam Pramiswari, Faradiba Ghandi Prasetyo Edi, Prasetyo Prattiwi, Elisabeth Anna Priyahapsara, Istyawan Priyahapsara Putra, Ananda Adhitya Rakahila, Raihan Aventa Rakha, Humaid Iswahyu Hafizh Rastra Arif Pradana Rindu Alriavindra Funny Rindu Alriavindrafunny Rully Medianto, Rully Santoso, Djarot Wahyu Santoso, Prasidananto Nur Setiawan, Paulus Sri Mulyani Sri Mulyani Sukmabuana, Nengah Batara Uyuunul Mauidzoh Wati, Denisa Trisma Wibowo, Suryo Ari Yasrin Zabidi, Yasrin Yenni Astuti, Yenni Zalukhu, Wellman