Document ID: chunk:federal_register_of_legislation:F2006B02266:body:0
Version: federal_register_of_legislation:F2006B02266
Segment Type: other
Provision Reference: 
Character Range: 0–902

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY
 SCHEDULE OF AIRWORTHINESS DIRECTIVES

 Allison Turbine Engines - 250 Series

 AD/AL 250/54
 Amdt 1

   Engine Turbine Assembly No. 8 Bearing U-Ring Installation

 5/84

 Applicability: Allison 250-C28B/C28C engines.

 Document: Allison 250 C28B/C28C CEB-A-72-2082 Rev 1.

            Note: FAA AD Allison 83-01-04 AMDT. 39-4539 refers.

 Compliance: In accordance with the Requirement Documents.

            Background: This have been instances of an air leak occurring into the No. 8 bearing sump, forcing oil through the No. 8 bearing labyrinth seal onto the No. 1 turbine wheel, resulting in oil fires and damage to first stage turbine wheels. This Directive is raised in issue to ensure compliance with Revision 1 of the document which is a complete revision replacing the original.