Aviation safety issues and actions

Commercial Tiger Moth joy flight operations with high aerobatic utilisation

Issue number: AO-2013-226-SI-08
Who it affects: Commercial Tiger Moth joy flight operators
Issue owner: de Havilland Support Ltd
Transport function: Aviation: General aviation
Background: Investigation Report AO-2013-226
Issue release date: 21 January 2016
Current issue status: Safety action pending
Issue status justification:

The ATSB is satisfied that the safety action taken by de Havilland Support Ltd will, once implemented, address this safety issue.

Safety issue description

Although a number of aerobatic manoeuvres were permitted in Tiger Moth aircraft, there was no limitation on the amount of aerobatic operations that was considered to be safe. As a result, operators may be unaware that a high aerobatic usage may exceed the original design assumptions for the aircraft. 

Initial ATSB advice of the safety issue

The ATSB corresponded with de Havilland Support Ltd about this issue during the investigation. In addition, the draft safety issue was included in the draft investigation report.

Proactive Action

Action number: AO-2013-226-NSA-045
Action organisation: de Havilland Support Ltd
Date: 21 January 2016
Action status: Released

A new Technical News Sheet [TNS], to be issued in January 2016, will define the acceptable intensity of aerobatic utilisation for Tiger Moth aircraft. The TNS will expand on the existing UK [United Kingdom] Certification Basis which already details the specific aerobatic manoeuvres which can and cannot be carried out. This TNS will be mandated by UK CAA [Civil Aviation Authority] Airworthiness Directive.

Last update 24 February 2016