Aviation safety investigations & reports

Assistance to the Civil Aviation Safety Authority - Technical examination of failed engine crankcase through-bolts

Investigation number:
Status: Completed
Investigation completed


he Australian Transport Safety Bureau (ATSB) has completed its technical analysis investigation into the failure of two reciprocating piston engine crankcase through-bolts, on behalf of the Australian Civil Aviation Safety Authority (CASA). CASA was the principal investigating agency in this instance. CASA requested assistance from the ATSB in the examination and analysis of the metallurgical aspects of the bolt failure. To facilitate the examination, the ATSB commenced an investigation under the Transport Safety Investigation Act (2003).

The ATSB's Technical Analysis Report has been sent to CASA to assist its ongoing investigation.

Contact details for CASA are: www.casa.gov.au



Released in accordance with section 25 of the Transport Safety Investigation Act 2003.

General details
Date: 22 June 2009   Investigation status: Completed  
Time: na   Investigation level: Systemic - click for an explanation of investigation levels  
Location: Not applicable    
State: Other    
Release date: 22 July 2009   Occurrence category: Technical Analysis  
Report status: Final   Highest injury level: None  
Last update 03 April 2020