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A Trigana Air Avions de Transport Regional ATR-42-300, registration PK-YRN performing flight TGN-257 from Jayapura to Oksibil (Indonesia) with 49 passengers and 5 crew, was enroute estimated to arrive in Oksibil at 15:15L (06:15Z), however, did not contact or land in Oksibil. The aircraft was declared missing, a search for the aircraft was initiated. On Aug 17th 2015 the aircraft was found at an altitude of about 8,300 feet at the side of the Pegunungan Bintang Regency mountain at coordinates S4.8215 E140.4992.

Authorities reported the aircraft was anticipated to contact Oksibil at around 15:00L, Oksibil attempted to establish radio contact with the aircraft starting at 15:00L to no avail. Another Trigana ATR-42-300 PK-YRR, was dispatched to search for the missing aircraft, the aircraft departed Jayapura at 15:30L to look for the missing aircraft. PK-YRR returned to Jayapura 2 hours later without locating the missing aircraft, the crew reported the weather did not permit to fly through the area of Ambisibil, where a visual flight was not possible.

Papua Police reported they are responding to phone calls from residents in the village Bape, at the mountain ridge about 3.5nm southwest of Ambisibil and 15nm northwest of Oksibil, that they have seen an aircraft impacting terrain in the area, and dispatched rescue personnel into the area. The search was interrupted for the night and is to resume Monday (Aug 17th) morning.

AirNav Indonesia reported the weather in both Jayapura and Oksibil was reported good with good visibility.

Indonesia's National Search and Rescue Agency (SAR) reported they were informed the contact with the aircraft was lost at 14:55L (05:55Z), the aircraft did not land in Oksibil until 15:16L (06:16Z).

Indonesia's Ministry of Transport reported the flight number was TGN-257, not TGN-267 as reported earlier, the aircraft involved is PK-YRN. The Ministry advised that the names of the crew members published by the Ministry so far were in error, too. The search for the missing aircraft has been suspended for the night.

On Aug 17th 2015 Indonesia's Ministry of Transport reported that a helicpter located the debris of the missing aircraft on Aug 17th 2015 at 08:50L (23:50Z Aug 16th) at the side of the Pegunungan Bintang Regency at coordinates S4.8215 E140.4992 at an altitude of about 8300 feet, about 8.5nm from the airport. Due to weather the helicopter operations had to be suspended subsequently, however. A total of 266 rescue personnel are on their way on the ground to the crash site. Only Indonesian nationals, no foreigners were on board of the aircraft.

On Aug 17th 2015 Papua's Police reported the wreckage has been located about 12 to 15km (6.5 to 8.1nm) from Oksibil Airport.

Indonesia's Ministry of Transport states, Oksibil Airport is located at coordinates S4.907222 E140.628333, 4000 feet elevation, and features a runway 11/29 of about 3900 feet/1200 meters length. The unattended aerodrome is capable of receiving Dash 7 and ATR-42 aircraft.

Source :
http://avherald.com/h?article=48ae1ad9&opt=0