Aviation safety issues and actions
Recommendation issued to: Pratt & Whitney Canada
|Date issued:||09 October 2007|
|Safety action status:||Closed - Partial Action|
|Background:||Why this Recommendation was developed|
The Australian Transport Safety Bureau recommends that Pratt & Whitney Canada, in conjunction with Transport Canada, incorporate measures to electrically isolate the starter-generator gear-shaft input coupling spline and the engine number-1 main shaft bearing of all Pratt & Whitney Canada PT6A series engines.
|Response from:||Pratt and Whitney Canada|
Pratt and Whitney responded to this proposed safety recommendation (draft recommendation A) in the ATSB draft report by stating:
The ATSB does not accept that P&WC's response to the draft recommendation is adequate and believes that P&WC should take a pro-active role and work in conjunction with Transport Canada to develop an effective method to electrically isolate starter-generators in the existing fleet of PT6A series engines in order to eliminate the possibility of engine failure due to EDD. As such the ATSB now formally issues safety recommendation R20070015.