Incident Overview
The Derailment (Anjlokan) involving KA 17 Argo Semeru (Surabaya Gubeng–Gambir) & KA 6 Argo Wilis (Bandung–Surabaya Gubeng) occurred on 17 October 2023. The recorded incident site is located at Km 520+4 Sukoreno, Sentolo, Kulon Progo (tikungan besar eks St. Kalimenur section Wates–Sentolo), DIY, within the operational territory of DAOP 6 Yogyakarta.
Based on verified operational records: jam 13.15 WIB, terjadi kecelakaan kereta api anjlokan KA 17 Argo Semeru di KM. 520 + 420 southbound track section antara Sentolo Station – Wates wilayah Station DAOP 6 Yogyakarta, Propinsi Daerah Istimewa Yogyakarta. KA 17 Argo Semeru merupakan Kereta Penumpang Jarak Jauh relasi Surabaya Gubeng Station terdiri dari 12 (dua belas) kereta dalam 1 (satu) trainset trainset kereta api. at 12.58 WIB, KA 17 Argo Semeru berangkat dari Yogyakarta Station, dan mendapat informasi dari Operasi Kereta Api DAOP 6 Yogyakarta bahwa di southbound track KM 520 + 400 section antara Sentolo Station – Wates terdapat Station kondisi goyangan keras berdasarkan laporan dari KA sebelumnya yang telah melewati jalur tersebut dan di waktu yang sama sedang dilakukan pekerjaan perbaikan geometri jalan rel oleh personil UPT Resort JR 6.3 Wates. Pada pukul 13.
Track Characteristics & Operational Corridor
The incident location is situated along the track section or station perimeter of Km 520+4 Sukoreno, Sentolo, Kulon Progo (tikungan besar eks St. Kalimenur section Wates–Sentolo), DIY. Railway lines across DAOP 6 Yogyakarta represent active corridors with steady passenger and freight traffic. Train operations are governed by statutory right-of-way principles outlined in national railway operational codes. At level crossings and station yards, traffic safety strictly relies on signaling obedience, level crossing warning devices, and road user compliance with rail right-of-way regulations.
Rolling Stock Involved & Recorded Impact
Zero fatalities were recorded in this incident; 32 injuries were sustained and received medical treatment.
Rolling stock and fleet formations identified in official documentation include: KA 17 Argo Semeru (Locomotive seri CC 206 + 8 executive coaches + 1 makan + 1 pembangkit; car 6 nomor K1 0 18 63 derailed 4 as & heavily damaged) diserempet Locomotive CC 206 13 53 (penarik KA 6 Argo Wilis) (tercatat pula keterlibatan unit CC 206 13 69 YK dalam arsip). Post-incident emergency responses were carried out by regional railway operational teams and local emergency services, encompassing safety evacuations, physical structural assessments of locomotives and carriages, track clearing, and restoration of signaling infrastructure.
Safety Regulations & Statutory Context
This technical documentation is compiled as part of Indonesia's national railway safety public archive. In accordance with Law of the Republic of Indonesia Number 23 of 2007 concerning Railways (UU No. 23/2007), railway safety is a shared responsibility covering rolling stock airworthiness, track infrastructure integrity, train crew operational discipline, and public adherence at level crossings to safeguard safe and orderly transportation.