The Australian Transport Safety Bureau recommends that the
Direction Generale de l'Aviation Civile (DGAC) assess the adequacy
of the Turbomeca Arriel engine MO3 bearing lubrication installation
to determine if it meets the applicable design standard
requirements.
We acknowledge receipt of the to Air Safety Recommendations
R20010193 and R20010197 from the Australian Transport Safety Bureau
which relate to Arriel engine failure.
These recommendations were carefully analysed and I am pleased to
provide our conclusions which are the following:
R20010193: in light of the incidents related in your referenced
document, DGAC determined that the Arriel 1 engine complies with
the latest airworthiness requirement, i.e. JAR-E-530 "Fire" under
"Notice for Proposed Amendment " NPA-E-24 and interpretative
material NPA-E-37 (note: these requirements result from the
harmonisation with FAR 33, but are not significantly different from
current JAR-E requirements).
Appendixes attached to this letter describe DGAC's approach in more
details.
The DGAC response was not adequate and did not address the
hazard and discrepancy with the JAR as outlined.
Page 9 of reference document: R20010193 issued September 2001.
DGAC response stated that Arriel 1 engine complies with the latest
requirement closed to be formally released, but we also wrote that
this update is not significantly different from the current JAR
code (it is mostly a concern for re-writing this code to be fully
harmonised with FAR requirement). So, DGAC response is not a
proposal to change the applicable regulation.
The DGAC response was not adequate and did not address the
hazard and discrepancy with the JAR as outlined.
