Document ID: chunk:federal_register_of_legislation:F2006B11032:body:0:p2
Version: federal_register_of_legislation:F2006B11032
Segment Type: other
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Character Range: 2671–3574

is not considered a shop visit.

            This Airworthiness Directive becomes effective on 15 April 2004.

 Pratt and Whitney Turbine Engines - JT9D Series

 AD/JT9D/39 (continued)

            Background: This Directive requires on JT9D-7R4 series turbofan engines with steel fan cases, replacement of the existing one-piece fan case shield with a thicker four-piece fan case shield that will add four fan case shield supports. This Directive is in response to two uncontained full fan blade fracture events that resulted in penetration of the steel fan case and fan case shield. The actions detailed in this Directive are to prevent uncontained fan blade failures, resulting in damage to the aeroplane.

 James Coyne
 Delegate of the Civil Aviation Safety Authority 4 March 2004

 The above AD is notified in the Commonwealth of Australia Gazette on 24 March 2004.