Aviation safety issues and actions

Fuselage lateral tie rod Australian Parts Manufacturer Approval

Issue number: AO-2013-226-SI-06
Who it affects: Owners and operators of DH82 and DH82A Tiger Moth aircraft fitted with JRA 776 1 fuselage lateral tie rods
Issue owner: Civil Aviation Safety Authority
Transport function: Aviation: General aviation
Background: Investigation Report AO-2013-226
Issue release date: 21 January 2016
Current issue status: Adequately addressed
Issue status justification:

As a result of the safety action taken by the United Kingdom Civil Aviation Authority, New Zealand Civil Aviation Authority and CASA in response to safety issue AO‑2013‑226‑SI‑01, all JRA-776-1 tie rods were removed from service. This action minimises the safety risk associated with this safety issue.

Safety issue description

It was likely that, because of the Civil Aviation Safety Authority’s policy at the time, their engineering assessment of the tie rod design for inclusion in the manufacturer’s Australian Parts Manufacturer Approval did not consider the service history of the original tie rods or identify that they were subject to airworthiness directive AD/DH 82/10. Consequently, the assessment team was likely unaware that the original tie rods were subject to a life limitation, and did not require the life limits for the replacement tie rods to be established.

Initial ATSB advice of the safety issue

The ATSB provided the Civil Aviation Safety Authority (CASA) with written information about this safety issue on 30 January 2015. A follow-up meeting was held with CASA to discuss the issue further on 11 February 2015. 

Last update 24 February 2016