2011 YAJASI Pilatus Porter Accident in Papua (PK-UCE)

Flight Details and Disappearance On 22 September 2011, a Pilatus Porter aircraft, registration PK-UCE, operated by Yayasan Jasa Aviasi Indonesia (YAJASI), departed from Pagai for Wamena at 0403 UTC (1303 local time). The flight was conducted under Visual Flight Rules (VFR) at a cruise altitude of 10,000 feet, following the North Gap corridor visual route. The estimated time of arrival at Wamena was 0436 UTC. Prior to entering the North Gap corridor at 0413 UTC, the pilot transmitted position, altitude, and destination information to the company Flight Following Officer at Sentani Airport and made a blind transmission on the Wamena Tower radio frequency, in accordance with local procedures. However, the pilot failed to send the required message confirming passage through the North Gap corridor, and no further radio contact was established before the estimated time of arrival. The Flight Following Officer subsequently alerted other YAJASI personnel and aircraft in the area to initiate a search for PK-UCE.