Aviation safety investigations & reports

Loss of control involving Pilatus PC-12/47E, VH-OWJ, near Merredin, Western Australia, on 14 April 2019

Investigation number:
Status: Active
Investigation in progress


The ATSB is investigating a loss of control incident involving a Pilatus PC-12 (registration VH-OWJ), near Merredin, Western Australia.

The aircraft had departed Merredin at about 0020 (WST) for a medical transport flight to Jandakot. It was reported that, while climbing through 2,600 ft, the aircraft sustained an uncommanded pitch down and descent with a TERRAIN TERRAIN alert. After regaining control the pilot returned the aircraft to Merredin.

The ATSB will liaise with the aircraft operator to obtain relevant evidence, inspect the aircraft and interview the crew.

A final report will be released at the end of the investigation.

Should a critical safety issue be identified during the course of the investigation, the ATSB will immediately notify those affected and seek safety action to address the issue.

General details
Date: 14 April 2019   Investigation status: Active  
Time: 0:20 WST   Investigation level: Defined - click for an explanation of investigation levels  
Location   (show map): Merredin   Investigation phase: Examination and analysis  
State: Western Australia   Occurrence type: Loss of control  
  Occurrence category: Serious Incident  
Report status: Pending   Highest injury level: None  
Anticipated completion: 2nd Quarter 2020    

Aircraft details

Aircraft details
Aircraft manufacturer Pilatus Aircraft Ltd  
Aircraft model PC-12/47E  
Aircraft registration VH-OWJ  
Serial number 1411  
Operator Royal Flying Doctor Service of Australia (Western Operations)  
Type of operation Medical Transport  
Sector Turboprop  
Damage to aircraft Nil  
Departure point Merredin, WA  
Destination Jandakot, WA  
Last update 02 December 2019