Données préliminaires issues de la notification des autorités d'Indonésie :
The PK-YRN aircraft, as flight IL-257, conducted a passenger flight from Sentani Airport to Oksibil Airport. At 14:22 LT, PK-YRN aircraft departed from Sentani with 3½ hours fuel endurance, and will arrive Oksibil at about 15:04 LT. The PK-YRN aircraft communication with Oksibil tower at 14:55 LT,but then at 15:00 LT the Oksibil tower failed to contact. At about 15:15 LT the Oksibil Tower declared aircraft lost contact.
Next morning, a SAR helicopter located a wreckage aircraft at the side of Bintang Mountain, Okbape District at an altitude 8,300 feet.
Accident in Indonesia to the ATR 42-300, registered PK-YRN, on Sunday 16 August 2015
INFORMATION ON 18 AUGUST 2015
Following the announcement from the Indonesian authorities of the localisation of the wreckage of the ATR 42-300 yesterday evening, a team of three BEA investigators, accompanied by four technical advisers from ATR, is leaving for Djakarta (Indonesia) this evening. The BEA investigators will co-ordinate with their counterparts from the National Transportation Safety Committee (NTSC).
On the evening of 16 August, local time, air traffic control lost contact with the aeroplane, registered PK-YRN and operated by Trigana Air Service, which was undertaking a flight between Sentani and Oksibil airports (Indonesia) ;