Aviation safety issues and actions
Recommendation issued to: Kawasaki Heavy Industries
|Date issued:||15 June 2000|
|Safety action status:|
|Background:||Why this Recommendation was developed|
The Australian Transport Safety Bureau recommends that Kawasaki
Heavy Industries clarify the bolt-tightening instructions contained
in Service Bulletin 305 to establish if an allowance should be made
for the frictional torque effects of self-locking nuts.
As a result of technical analysis of the fan blade failures, the Bureau simultaneously issues the following recommendations:
The Australian Transport Safety Bureau recommends that the Civil Aviation Safety Authority alert helicopter maintenance organisations and all aircraft maintenance engineers to the potentially detrimental effects of painting engine-cooling fans.
The Australian Transport Safety Bureau recommends that the Civil Aviation Safety Authority alert all aircraft maintenance engineers, especially those conducting nondestructive inspections, to the detrimental effects that may be created in critical components by the abrasion of surfaces during general cleaning or cleaning in preparation for nondestructive inspection.
|Date issued:||08 August 2000|
|Response from:||Kawasaki Heavy Industries|
|Action status:||Closed - Accepted|
AA. KHI is very surprised to realize that engine cooling fan s/n
A34-08516 was of Bell Helicopter manufacture, although it seems
that you had been informed this information by Bell Helicopter
Textron facsimile dated 10-18-95. As we had been reiterated so far
that "incorrect cooling fan had been used on damaged VH-KEB", we
deeply regret that you had not kept KHI informed so that our
understanding should be revised.