Flight History
On 8 June 2022, a Bell 412 helicopter, registration PK-DAR, operated by PT Derazona Air Service, was conducting a non-schedule flight. According to the filed flight plan, the helicopter was scheduled to fly from Mozes Kilangin Airport, Timika, to the Bupati Area helipad, then to Jila Airstrip, back to Bupati Area helipad, and finally return to Timika.
At 0713 LT (2213 UTC), the helicopter departed Timika for the Bupati Area helipad with two pilots and one Helicopter Landing Officer (HLO) on board. After landing at the Bupati Area helipad, about 5 Nm from Timika, three passengers—one medical doctor and two nurses—boarded the helicopter. At 0800 LT, the helicopter departed for Jila, a flight estimated to take 40 minutes.
Upon arrival at Jila, the helicopter picked up two adults and three infant passengers. The intention of the flight was to transport a mother who had experienced lotus birth and placenta previa, along with her twin baby girls, to Timika hospital for further treatment. The helicopter then departed Jila for the Bupati Area helipad as scheduled.
During the return flight from Jila to Bupati Area, the helicopter encountered weather and subsequently crashed. The wreckage was located about 24 Nm on radial 088 from Timika, at coordinates 4° 30′ 09″ S, 137° 16′ 34.7″ E.
Injuries to Persons
Of the 11 persons on board, one infant passenger sustained fatal injuries. The two pilots suffered serious injuries, and the remaining eight passengers (including the HLO and other passengers) received minor injuries. All occupants were Indonesian nationals.
Damage to Aircraft
The helicopter sustained substantial damage. There was no other damage to property or the environment.
Personnel Information
The Pilot in Command was a 62-year-old male with an Airline Transport Pilot License/Helicopter (ATPL/H), type-rated on the Bell 412. His last proficiency check was on 25 February 2022. The Second in Command held a Commercial Pilot License/Helicopter (CPL/H), type-rated on the Bell 412. More specific flight experience figures are available in the full preliminary report.
Aircraft Information
The Bell 412 helicopter, serial number [not specified in source], was manufactured by Bell Textron Inc. It was equipped with two Pratt & Whitney Canada PT6T-3B Twin-Pac engines and a four-blade main rotor system. The helicopter was registered in Indonesia with registration PK-DAR and had been operated by PT Derazona Air Service since 2005.
Meteorological Information
The pilot received weather information from Timika before departure. No further details are available in the preliminary report.
Flight Recorders
The helicopter was not equipped with a Flight Data Recorder (FDR); however, a Cockpit Voice Recorder (CVR) was installed and recovered for analysis.
Wreckage and Impact Information
The helicopter crashed in a remote area approximately 24 Nm east of Timika. The wreckage was located at the coordinates provided. Further details of impact sequence are pending investigation.
Additional Information
The investigation is ongoing, and no safety actions have been received from the operator as of the preliminary report date.