A Bell 412 aircraft, registration PK-DAR, was being operated by PT Derazona Air Service on a non-schedule from Mozes Kilangin Airport, Timika, Papua, Indonesia (WAYY) to Jila Airstrip, Papua, Indonesia (WAYJ).

According to the filed flight plan, the helicopter would conduct the flight of Timika – Bupati Area helipad – Jila – Bupati Area helipad – Timika.

On 8 June 2022 at 2213 UTC (0713 LT), the helicopter departed from Timika to Bupati Area. Onboard in this flight were two pilots and one Helicopter Landing Officer (HLO). Several minute later the helicopter landed on the Bupati Area helipad. The distance from Timika to Bupati Area helipad was about 5 Nm. After landed at Bupati Area helipad, the helicopter picked up three passengers consists of one medical doctor and two nurses.

At 0800 LT, the helicopter departed to Jila. The flight from Bupati Area helipad to Jila was estimated about 40 minutes.

The intention to Jila was picked up a mother who experienced lotus births (lotus birth is the practice of birthing the baby and placenta, and leaving the cord intact between mother and the baby). In that case the mother also had the problem of placenta previa (complete or partial covering of the cervix with the placenta). The plan was that the mother of twin baby girls will be expedited from Jila to the Timika hospital for further treatment.

As the flight plan, the helicopter flew back from Jila to Bupati Area helipad.

On the flight back from Jila to Bupati Area helipad, the helicopter encountered weather.

The helicopter crashed and found about 24 Nm on radial 088 from Timika with the coordinate of 4° 30’ 09” S 137° 16’ 34.7” E. The pilots experienced serious injury. The passengers were survived and one of the infant passengers was fatally injured. The investigation is ongoing. The KNKT did not receive any safety action from the operator