Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG Turbofan Engines
airworthiness · Rule · Final rule. · Published 2013-03-20 · Effective 2013-04-24 · 78 FR 17079
Document
Document number
2013-06115
Federal Register citation
78 FR 17079
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Rolls-Royce Deutschland Ltd & Co KG Turbofan
Publication date
2013-03-20
Effective date
2013-04-24
FAA docket
Docket No. FAA-2012-1167
Abstract
We are adopting a new airworthiness directive (AD) for certain Rolls-Royce Deutschland Ltd & Co KG (RRD) models Tay 620-15 and Tay 650-15 turbofan engines. This AD was prompted by RRD recalculating the Declared Safe Cyclic Life (DSCL) for certain low-pressure compressor (LPC) rotor disc assemblies operating to the Plan D Flight Mission. This AD requires removing the affected LPC rotor disc assemblies at a new lower recalculated DSCL. We are issuing this AD to prevent failure of the LPC rotor disc assembly, uncontained engine failure, and damage to the airplane.