Occurrence Briefs are concise reports that detail the facts surrounding a transport safety occurrence, as received in the initial notification and any follow-up enquiries. They provide an opportunity to share safety messages in the absence of an investigation.
On 10 March 2018, at about 1600 Eastern Standard Time (EST), an Agusta AW139 helicopter was ground-taxiing to its parking area when it struck a maintenance work stand with the main rotor blades. At the time of the impact, the helicopter was being positioned short of the refuelling area to allow another aircraft to utilise it.
The helicopter was travelling at a slow walking pace when the impact occurred. The impact was felt as a vibration through the rotor system and had no effect on the fuselage or forward movement. The crew conducted a normal shutdown.
Post-flight, engineers inspected numerous components of the helicopter. Damage was isolated to the tip cap assemblies of the main rotor blades (Figure 1).
Even when operating in familiar environments, flight crew need to remain vigilant for potential hazards in the area and maintain a good look out to ensure distances from obstacles are maintained.
About this report
Decisions regarding whether to conduct an investigation, and the scope of an investigation, are based on many factors, including the level of safety benefit likely to be obtained from an investigation. For this occurrence, no investigation has been conducted and the ATSB did not verify the accuracy of the information. A brief description has been written using information supplied in the notification and any follow-up information in order to produce a short summary report, and allow for greater industry awareness of potential safety issues and possible safety actions.
|Date:||10 March 2018||Investigation status:||Completed|
|Release Date:||20 April 2018||Occurrence category:||Serious Incident|
|Aircraft manufacturer||Agusta, S.p.A, Construzioni Aeronautiche|
|Type of operation||Aerial Work|
|Damage to aircraft||Substantial|