# Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG Turbofan Engines
> **Rule** · Final rule. · Published 2018-09-07 · Effective 2018-10-12 · 83 FR 45335
## Document
- **Document number:** 2018-19365
- **Category:** airworthiness
- **Manufacturer:** Rolls-Royce Deutschland Ltd & Co KG Turbofan
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 83 FR 45335
- **Publication date:** 2018-09-07
- **Effective date:** 2018-10-12
- **FAA docket:** Docket No. FAA-2017-1050
## Abstract

We are adopting a new airworthiness directive (AD) for certain Rolls-Royce Deutschland Ltd & Co KG (RRD) BR700-710A2-20 and BR700- 710C4-11 turbofan engines. This AD was prompted by reports of deterioration of the intumescent heat resistant paint system on the electronic engine controller (EEC) firebox assembly that was found to be beyond acceptable limits. This AD requires replacement of affected EEC firebox assembly parts with improved parts, which have a more durable paint system. We are issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2018/09/07/2018-19365/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-turbofan-engines)
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