Australian CASA Lifts Limitations for Jabiru-Powered Aircraft

Jabiru engine

Jabiru engine

After nearly 20 months of investigation, the Australian Civil Aviation Safety Authority (CASA) has lifted its operational limitations for most Jabiru-powered aircraft in Australia. Stock Jabiru engines that are maintained in strict accordance with Jabiru service bulletins and maintenance instructions are no longer affected by the limitations, which were issued in late 2014. Continue reading "Australian CASA Lifts Limitations for Jabiru-Powered Aircraft"

Australia Mandates Control Cable Replacement At 15 Years

control cablesAustralia's Civil Aviation Safety Authority (CASA) has issued a final rule that will require the full replacement and re-rigging of primary flight control cable system assemblies in most aircraft in Australia by January of 2018. The rule does not apply to secondary control system cables. In the last seven years, there have been 48 reported incidents of cable control terminal failure due to stress corrosion cracking and CASA says the cheapest and most effective way to mitigate the hazard is to replace the entire primary flight control cable system every 15 years. It would appear that virtually every aircraft more than 15 years old on Jan. 1, 2018, except for a relative few (mostly airliners) maintained through a maintenance steering group-3 (MSG-3) process, will have to have all-new primary control cables to remain airworthy. There is no indication yet that the FAA intends to impose a similar measure. The problem originates in the stainless steel connectors that link the cables to various fittings throughout the control systems. Continue reading "Australia Mandates Control Cable Replacement At 15 Years"

Update: Precautions for Jabiru Powered Aircraft

CASA_LogoThe Australian Civil Aviation Safety Authority will place a set of precautionary operating limitations on aircraft powered by Jabiru engines. This is a revised set of revisions from those originally published, and will allow the use of Jabiru-powered aircraft by student pilots, something not allowed in the proposed restrictions presented over a month ago.

These precautionary limitations follow a high number of Jabiru engine failures and power loss incidents, some of which resulted in aircraft forced landings.

More than 45 Jabiru engine failures or in-flight engine incidents have been reported in 2014, with CASA recently becoming aware of incidents in previous years.

Problems with Jabiru engines include failures of through bolts, flywheel bolts and valve train assemblies, as well as cylinder cracking. Continue reading "Update: Precautions for Jabiru Powered Aircraft"

Australian Authorities Propose Limitations on Jabiru-Powered Aircraft

Photo: Jabiru
Photo: Jabiru

CASA - the Australian equivalent of the US Federal Aviation Administration - issued draft documents that would severely limit operations for aircraft equipped with Jabiru engines, at least until addition study and investigation into a significant number of engine failures is conducted. Quoting the CASA web site:

CASA is responding to a high, and increasing, rate of engine failures among aircraft that are powered by engines manufactured by, or under licence from, Jabiru Aircraft Pty Ltd (Jabiru). Such aircraft are referred to in this document as 'Jabiru powered aircraft'.

The issues appear to be the result of several failure modes, which require separate investigation.

CASA has formed the view that its functions under the Civil Aviation Act 1988 require it to mitigate certain risks to passengers, trainee pilots and persons on the ground.

Accordingly, while CASA works with Jabiru to identify the causes of these engine failures and to implement appropriate corrective actions, CASA proposes a set of operating limitations on Jabiru powered aircraft.
Continue reading "Australian Authorities Propose Limitations on Jabiru-Powered Aircraft"