Aviation safety investigations & reports

Technical assistance to CASA in the examination of the engine from a power loss event involving a Jabiru J160 aircraft, registered 19-7549 near Scone NSW on 11 November 2015

Investigation number:
Status: Completed
Investigation completed


On 11 November 2015, a Jabiru J160 aircraft, Recreational Aviation Australia (RAAus) registration 19-7549, sustained a partial loss of engine power while enroute from Gunnedah to Cessnock, NSW. Unable to maintain altitude, the pilot elected to divert to Scone aerodrome. However, due to an increasing rate of descent, the pilot conducted an emergency landing into an open field near Scone. The aircraft landed without incident.

Blockage of the wing fuel tank filler vent cap was found during the subsequent inspection of the aircraft fuel system. Partial disassembly of the engine also identified that the number-four cylinder had sustained a broken inlet valve spring.

The Civil Aviation Safety Authority (CASA) commenced an investigation into the circumstances surrounding the engine power loss. CASA requested the technical assistance and oversight of the Australian Transport Safety Bureau (ATSB) in conducting a detailed examination of the occurrence aircraft and its engine. To facilitate this assistance, the ATSB initiated an external investigation under the provisions of the Transport Safety Investigation Act 2003.

A report detailing the examinations and ATSB's findings was provided to CASA, RAAus and the aircraft manufacturer, on 30 May 2016. Enquiries relating to the investigation should be directed to CASA on 131 757.

Figure 1: The engine from Jabiru J160 aircraft, RAAus registration 19-7549Figure 1: The engine from Jabiru J160 aircraft, RAAus registration 19-7549
Source: ATSB



The information contained in this web update is released in accordance with section 25 of the Transport Safety Investigation Act 2003 and is derived from the initial investigation of the occurrence. Readers are cautioned that new evidence will become available as the investigation progresses that will enhance the ATSB's understanding of the accident as outlined in this web update. As such, no analysis or findings are included in this update.


General details
Date: 11 November 2015   Investigation status: Completed  
  Investigation level: Defined - click for an explanation of investigation levels  
Location   (show map): near Scone    
State: New South Wales   Occurrence type: Forced/precautionary landing  
Release date: 07 November 2016   Occurrence category: Serious Incident  
Report status: Final   Highest injury level: None  

Aircraft details

Aircraft details
Aircraft manufacturer Jabiru Aircraft Pty Ltd  
Aircraft model J160  
Aircraft registration 19-7549  
Serial number Unknown  
Type of operation Private  
Sector Piston  
Damage to aircraft Nil  
Departure point Gunnedah, NSW  
Destination Cessnock, NSW  
Last update 14 November 2018