Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG (Type Certificate Formerly Held by Rolls-Royce plc) Turbofan Engines
airworthiness · Rule · Final rule; request for comments. · Published 2020-07-20 · Effective 2020-08-04 · 85 FR 43682
Document
Document number
2020-15563
Federal Register citation
85 FR 43682
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Rolls-Royce Deutschland Ltd & Co KG (Type Certificate Formerly Held by Rolls-Royce plc) Turbofan
Publication date
2020-07-20
Effective date
2020-08-04
FAA docket
Docket No. FAA-2020-0617
Abstract
The FAA is adopting a new airworthiness directive (AD) for certain Rolls-Royce Deutschland Ltd & Co KG RB211-524G2-19, RB211- 524G2-T-19, RB211-524G3-19, RB211-524G3-T-19, RB211-524H2-19, RB211- 524H2-T-19, RB211-524H-36 and RB211-524H-T-36 model turbofan engines. This AD requires replacement of the low-pressure turbine (LPT) stage 1 disk before it reaches its new Declared Safe Cycle Limit (DSCL) or within 25 flight cycles after the effective date of this AD, whichever occurs later. This AD was prompted by a determination by the manufacturer that the affected LPT stage 1 disks cannot operate until their former published life limit. The FAA is issuing this AD to address the unsafe condition on these products.